18978960

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1$

素因数の和:126

約数の個数: 320

約数和(自身を含む): 79994880

約数和(自身を除く): 61015920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 20, 21, 22, 24, 26, 28, 30, 33, 35, 39, 40, 42, 44, 48, 52, 55, 56, 60, 65, 66, 70, 77, 78, 79, 80, 84, 88, 91, 104, 105, 110, 112, 120, 130, 132, 140, 143, 154, 156, 158, 165, 168, 176, 182, 195, 208, 210, 220, 231, 237, 240, 260, 264, 273, 280, 286, 308, 312, 316, 330, 336, 364, 385, 390, 395, 420, 429, 440, 455, 462, 474, 520, 528, 546, 553, 560, 572, 616, 624, 632, 660, 715, 728, 770, 780, 790, 840, 858, 869, 880, 910, 924, 948, 1001, 1027, 1040, 1092, 1106, 1144, 1155, 1185, 1232, 1264, 1320, 1365, 1430, 1456, 1540, 1560, 1580, 1659, 1680, 1716, 1738, 1820, 1848, 1896, 2002, 2054, 2145, 2184, 2212, 2288, 2310, 2370, 2607, 2640, 2730, 2765, 2860, 3003, 3080, 3081, 3120, 3160, 3318, 3432, 3476, 3640, 3696, 3792, 4004, 4108, 4290, 4345, 4368, 4424, 4620, 4740, 5005, 5135, 5214, 5460, 5530, 5720, 6006, 6083, 6160, 6162, 6320, 6636, 6864, 6952, 7189, 7280, 8008, 8216, 8295, 8580, 8690, 8848, 9240, 9480, 10010, 10270, 10428, 10920, 11060, 11297, 11440, 12012, 12166, 12324, 13035, 13272, 13904, 14378, 15015, 15405, 16016, 16432, 16590, 17160, 17380, 18249, 18480, 18960, 20020, 20540, 20856, 21567, 21840, 22120, 22594, 24024, 24332, 24648, 26070, 26544, 28756, 30030, 30415, 30810, 33180, 33891, 34320, 34760, 35945, 36498, 40040, 41080, 41712, 43134, 44240, 45188, 48048, 48664, 49296, 52140, 56485, 57512, 60060, 60830, 61620, 66360, 67782, 69520, 71890, 72996, 79079, 80080, 82160, 86268, 90376, 91245, 97328, 104280, 107835, 112970, 115024, 120120, 121660, 123240, 132720, 135564, 143780, 145992, 158158, 169455, 172536, 180752, 182490, 208560, 215670, 225940, 237237, 240240, 243320, 246480, 271128, 287560, 291984, 316316, 338910, 345072, 364980, 395395, 431340, 451880, 474474, 486640, 542256, 575120, 632632, 677820, 729960, 790790, 862680, 903760, 948948, 1186185, 1265264, 1355640, 1459920, 1581580, 1725360, 1897896, 2372370, 2711280, 3163160, 3795792, 4744740, 6326320, 9489480, 18978960]

約数ペア:

[(1, 18978960), (2, 9489480), (3, 6326320), (4, 4744740), (5, 3795792), (6, 3163160), (7, 2711280), (8, 2372370), (10, 1897896), (11, 1725360), (12, 1581580), (13, 1459920), (14, 1355640), (15, 1265264), (16, 1186185), (20, 948948), (21, 903760), (22, 862680), (24, 790790), (26, 729960), (28, 677820), (30, 632632), (33, 575120), (35, 542256), (39, 486640), (40, 474474), (42, 451880), (44, 431340), (48, 395395), (52, 364980), (55, 345072), (56, 338910), (60, 316316), (65, 291984), (66, 287560), (70, 271128), (77, 246480), (78, 243320), (79, 240240), (80, 237237), (84, 225940), (88, 215670), (91, 208560), (104, 182490), (105, 180752), (110, 172536), (112, 169455), (120, 158158), (130, 145992), (132, 143780), (140, 135564), (143, 132720), (154, 123240), (156, 121660), (158, 120120), (165, 115024), (168, 112970), (176, 107835), (182, 104280), (195, 97328), (208, 91245), (210, 90376), (220, 86268), (231, 82160), (237, 80080), (240, 79079), (260, 72996), (264, 71890), (273, 69520), (280, 67782), (286, 66360), (308, 61620), (312, 60830), (316, 60060), (330, 57512), (336, 56485), (364, 52140), (385, 49296), (390, 48664), (395, 48048), (420, 45188), (429, 44240), (440, 43134), (455, 41712), (462, 41080), (474, 40040), (520, 36498), (528, 35945), (546, 34760), (553, 34320), (560, 33891), (572, 33180), (616, 30810), (624, 30415), (632, 30030), (660, 28756), (715, 26544), (728, 26070), (770, 24648), (780, 24332), (790, 24024), (840, 22594), (858, 22120), (869, 21840), (880, 21567), (910, 20856), (924, 20540), (948, 20020), (1001, 18960), (1027, 18480), (1040, 18249), (1092, 17380), (1106, 17160), (1144, 16590), (1155, 16432), (1185, 16016), (1232, 15405), (1264, 15015), (1320, 14378), (1365, 13904), (1430, 13272), (1456, 13035), (1540, 12324), (1560, 12166), (1580, 12012), (1659, 11440), (1680, 11297), (1716, 11060), (1738, 10920), (1820, 10428), (1848, 10270), (1896, 10010), (2002, 9480), (2054, 9240), (2145, 8848), (2184, 8690), (2212, 8580), (2288, 8295), (2310, 8216), (2370, 8008), (2607, 7280), (2640, 7189), (2730, 6952), (2765, 6864), (2860, 6636), (3003, 6320), (3080, 6162), (3081, 6160), (3120, 6083), (3160, 6006), (3318, 5720), (3432, 5530), (3476, 5460), (3640, 5214), (3696, 5135), (3792, 5005), (4004, 4740), (4108, 4620), (4290, 4424), (4345, 4368)]