20780760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1$

素因数の和:218

約数の個数: 256

約数和(自身を含む): 84188160

約数和(自身を除く): 63407400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 20, 21, 22, 24, 26, 28, 30, 33, 35, 39, 40, 42, 44, 52, 55, 56, 60, 65, 66, 70, 77, 78, 84, 88, 91, 104, 105, 110, 120, 130, 132, 140, 143, 154, 156, 165, 168, 173, 182, 195, 210, 220, 231, 260, 264, 273, 280, 286, 308, 312, 330, 346, 364, 385, 390, 420, 429, 440, 455, 462, 519, 520, 546, 572, 616, 660, 692, 715, 728, 770, 780, 840, 858, 865, 910, 924, 1001, 1038, 1092, 1144, 1155, 1211, 1320, 1365, 1384, 1430, 1540, 1560, 1716, 1730, 1820, 1848, 1903, 2002, 2076, 2145, 2184, 2249, 2310, 2422, 2595, 2730, 2860, 3003, 3080, 3432, 3460, 3633, 3640, 3806, 4004, 4152, 4290, 4498, 4620, 4844, 5005, 5190, 5460, 5709, 5720, 6006, 6055, 6747, 6920, 7266, 7612, 8008, 8580, 8996, 9240, 9515, 9688, 10010, 10380, 10920, 11245, 11418, 12012, 12110, 13321, 13494, 14532, 15015, 15224, 15743, 17160, 17992, 18165, 19030, 20020, 20760, 22490, 22836, 24024, 24220, 24739, 26642, 26988, 28545, 29064, 30030, 31486, 33735, 36330, 38060, 39963, 40040, 44980, 45672, 47229, 48440, 49478, 53284, 53976, 57090, 60060, 62972, 66605, 67470, 72660, 74217, 76120, 78715, 79926, 89960, 94458, 98956, 106568, 114180, 120120, 123695, 125944, 133210, 134940, 145320, 148434, 157430, 159852, 173173, 188916, 197912, 199815, 228360, 236145, 247390, 266420, 269880, 296868, 314860, 319704, 346346, 371085, 377832, 399630, 472290, 494780, 519519, 532840, 593736, 629720, 692692, 742170, 799260, 865865, 944580, 989560, 1039038, 1385384, 1484340, 1598520, 1731730, 1889160, 2078076, 2597595, 2968680, 3463460, 4156152, 5195190, 6926920, 10390380, 20780760]

約数ペア:

[(1, 20780760), (2, 10390380), (3, 6926920), (4, 5195190), (5, 4156152), (6, 3463460), (7, 2968680), (8, 2597595), (10, 2078076), (11, 1889160), (12, 1731730), (13, 1598520), (14, 1484340), (15, 1385384), (20, 1039038), (21, 989560), (22, 944580), (24, 865865), (26, 799260), (28, 742170), (30, 692692), (33, 629720), (35, 593736), (39, 532840), (40, 519519), (42, 494780), (44, 472290), (52, 399630), (55, 377832), (56, 371085), (60, 346346), (65, 319704), (66, 314860), (70, 296868), (77, 269880), (78, 266420), (84, 247390), (88, 236145), (91, 228360), (104, 199815), (105, 197912), (110, 188916), (120, 173173), (130, 159852), (132, 157430), (140, 148434), (143, 145320), (154, 134940), (156, 133210), (165, 125944), (168, 123695), (173, 120120), (182, 114180), (195, 106568), (210, 98956), (220, 94458), (231, 89960), (260, 79926), (264, 78715), (273, 76120), (280, 74217), (286, 72660), (308, 67470), (312, 66605), (330, 62972), (346, 60060), (364, 57090), (385, 53976), (390, 53284), (420, 49478), (429, 48440), (440, 47229), (455, 45672), (462, 44980), (519, 40040), (520, 39963), (546, 38060), (572, 36330), (616, 33735), (660, 31486), (692, 30030), (715, 29064), (728, 28545), (770, 26988), (780, 26642), (840, 24739), (858, 24220), (865, 24024), (910, 22836), (924, 22490), (1001, 20760), (1038, 20020), (1092, 19030), (1144, 18165), (1155, 17992), (1211, 17160), (1320, 15743), (1365, 15224), (1384, 15015), (1430, 14532), (1540, 13494), (1560, 13321), (1716, 12110), (1730, 12012), (1820, 11418), (1848, 11245), (1903, 10920), (2002, 10380), (2076, 10010), (2145, 9688), (2184, 9515), (2249, 9240), (2310, 8996), (2422, 8580), (2595, 8008), (2730, 7612), (2860, 7266), (3003, 6920), (3080, 6747), (3432, 6055), (3460, 6006), (3633, 5720), (3640, 5709), (3806, 5460), (4004, 5190), (4152, 5005), (4290, 4844), (4498, 4620)]