81878160

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:222

約数の個数: 320

約数和(自身を含む): 327979008

約数和(自身を除く): 246100848

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 23, 24, 26, 28, 30, 35, 39, 40, 42, 46, 48, 52, 56, 60, 65, 69, 70, 78, 80, 84, 91, 92, 104, 105, 112, 115, 120, 130, 138, 140, 156, 161, 163, 168, 182, 184, 195, 208, 210, 230, 240, 260, 273, 276, 280, 299, 312, 322, 326, 336, 345, 364, 368, 390, 420, 455, 460, 483, 489, 520, 546, 552, 560, 598, 624, 644, 652, 690, 728, 780, 805, 815, 840, 897, 910, 920, 966, 978, 1040, 1092, 1104, 1141, 1196, 1288, 1304, 1365, 1380, 1456, 1495, 1560, 1610, 1630, 1680, 1794, 1820, 1840, 1932, 1956, 2093, 2119, 2184, 2282, 2392, 2415, 2445, 2576, 2608, 2730, 2760, 2990, 3120, 3220, 3260, 3423, 3588, 3640, 3749, 3864, 3912, 4186, 4238, 4368, 4485, 4564, 4784, 4830, 4890, 5460, 5520, 5705, 5980, 6279, 6357, 6440, 6520, 6846, 7176, 7280, 7498, 7728, 7824, 8372, 8476, 8970, 9128, 9660, 9780, 10465, 10595, 10920, 11247, 11410, 11960, 12558, 12714, 12880, 13040, 13692, 14352, 14833, 14996, 16744, 16952, 17115, 17940, 18256, 18745, 19320, 19560, 20930, 21190, 21840, 22494, 22820, 23920, 25116, 25428, 26243, 27384, 29666, 29992, 31395, 31785, 33488, 33904, 34230, 35880, 37490, 38640, 39120, 41860, 42380, 44499, 44988, 45640, 48737, 50232, 50856, 52486, 54768, 56235, 59332, 59984, 62790, 63570, 68460, 71760, 74165, 74980, 78729, 83720, 84760, 88998, 89976, 91280, 97474, 100464, 101712, 104972, 112470, 118664, 125580, 127140, 131215, 136920, 146211, 148330, 149960, 157458, 167440, 169520, 177996, 179952, 194948, 209944, 222495, 224940, 237328, 243685, 251160, 254280, 262430, 273840, 292422, 296660, 299920, 314916, 341159, 355992, 389896, 393645, 419888, 444990, 449880, 487370, 502320, 508560, 524860, 584844, 593320, 629832, 682318, 711984, 731055, 779792, 787290, 889980, 899760, 974740, 1023477, 1049720, 1169688, 1186640, 1259664, 1364636, 1462110, 1574580, 1705795, 1779960, 1949480, 2046954, 2099440, 2339376, 2729272, 2924220, 3149160, 3411590, 3559920, 3898960, 4093908, 5117385, 5458544, 5848440, 6298320, 6823180, 8187816, 10234770, 11696880, 13646360, 16375632, 20469540, 27292720, 40939080, 81878160]

約数ペア:

[(1, 81878160), (2, 40939080), (3, 27292720), (4, 20469540), (5, 16375632), (6, 13646360), (7, 11696880), (8, 10234770), (10, 8187816), (12, 6823180), (13, 6298320), (14, 5848440), (15, 5458544), (16, 5117385), (20, 4093908), (21, 3898960), (23, 3559920), (24, 3411590), (26, 3149160), (28, 2924220), (30, 2729272), (35, 2339376), (39, 2099440), (40, 2046954), (42, 1949480), (46, 1779960), (48, 1705795), (52, 1574580), (56, 1462110), (60, 1364636), (65, 1259664), (69, 1186640), (70, 1169688), (78, 1049720), (80, 1023477), (84, 974740), (91, 899760), (92, 889980), (104, 787290), (105, 779792), (112, 731055), (115, 711984), (120, 682318), (130, 629832), (138, 593320), (140, 584844), (156, 524860), (161, 508560), (163, 502320), (168, 487370), (182, 449880), (184, 444990), (195, 419888), (208, 393645), (210, 389896), (230, 355992), (240, 341159), (260, 314916), (273, 299920), (276, 296660), (280, 292422), (299, 273840), (312, 262430), (322, 254280), (326, 251160), (336, 243685), (345, 237328), (364, 224940), (368, 222495), (390, 209944), (420, 194948), (455, 179952), (460, 177996), (483, 169520), (489, 167440), (520, 157458), (546, 149960), (552, 148330), (560, 146211), (598, 136920), (624, 131215), (644, 127140), (652, 125580), (690, 118664), (728, 112470), (780, 104972), (805, 101712), (815, 100464), (840, 97474), (897, 91280), (910, 89976), (920, 88998), (966, 84760), (978, 83720), (1040, 78729), (1092, 74980), (1104, 74165), (1141, 71760), (1196, 68460), (1288, 63570), (1304, 62790), (1365, 59984), (1380, 59332), (1456, 56235), (1495, 54768), (1560, 52486), (1610, 50856), (1630, 50232), (1680, 48737), (1794, 45640), (1820, 44988), (1840, 44499), (1932, 42380), (1956, 41860), (2093, 39120), (2119, 38640), (2184, 37490), (2282, 35880), (2392, 34230), (2415, 33904), (2445, 33488), (2576, 31785), (2608, 31395), (2730, 29992), (2760, 29666), (2990, 27384), (3120, 26243), (3220, 25428), (3260, 25116), (3423, 23920), (3588, 22820), (3640, 22494), (3749, 21840), (3864, 21190), (3912, 20930), (4186, 19560), (4238, 19320), (4368, 18745), (4485, 18256), (4564, 17940), (4784, 17115), (4830, 16952), (4890, 16744), (5460, 14996), (5520, 14833), (5705, 14352), (5980, 13692), (6279, 13040), (6357, 12880), (6440, 12714), (6520, 12558), (6846, 11960), (7176, 11410), (7280, 11247), (7498, 10920), (7728, 10595), (7824, 10465), (8372, 9780), (8476, 9660), (8970, 9128)]