81538680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{953}}^1$

素因数の和:1021

約数の個数: 128

約数和(自身を含む): 263761920

約数和(自身を除く): 182223240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 31, 40, 46, 60, 62, 69, 92, 93, 115, 120, 124, 138, 155, 184, 186, 230, 248, 276, 310, 345, 372, 460, 465, 552, 620, 690, 713, 744, 920, 930, 953, 1240, 1380, 1426, 1860, 1906, 2139, 2760, 2852, 2859, 3565, 3720, 3812, 4278, 4765, 5704, 5718, 7130, 7624, 8556, 9530, 10695, 11436, 14260, 14295, 17112, 19060, 21390, 21919, 22872, 28520, 28590, 29543, 38120, 42780, 43838, 57180, 59086, 65757, 85560, 87676, 88629, 109595, 114360, 118172, 131514, 147715, 175352, 177258, 219190, 236344, 263028, 295430, 328785, 354516, 438380, 443145, 526056, 590860, 657570, 679489, 709032, 876760, 886290, 1181720, 1315140, 1358978, 1772580, 2038467, 2630280, 2717956, 3397445, 3545160, 4076934, 5435912, 6794890, 8153868, 10192335, 13589780, 16307736, 20384670, 27179560, 40769340, 81538680]

約数ペア:

[(1, 81538680), (2, 40769340), (3, 27179560), (4, 20384670), (5, 16307736), (6, 13589780), (8, 10192335), (10, 8153868), (12, 6794890), (15, 5435912), (20, 4076934), (23, 3545160), (24, 3397445), (30, 2717956), (31, 2630280), (40, 2038467), (46, 1772580), (60, 1358978), (62, 1315140), (69, 1181720), (92, 886290), (93, 876760), (115, 709032), (120, 679489), (124, 657570), (138, 590860), (155, 526056), (184, 443145), (186, 438380), (230, 354516), (248, 328785), (276, 295430), (310, 263028), (345, 236344), (372, 219190), (460, 177258), (465, 175352), (552, 147715), (620, 131514), (690, 118172), (713, 114360), (744, 109595), (920, 88629), (930, 87676), (953, 85560), (1240, 65757), (1380, 59086), (1426, 57180), (1860, 43838), (1906, 42780), (2139, 38120), (2760, 29543), (2852, 28590), (2859, 28520), (3565, 22872), (3720, 21919), (3812, 21390), (4278, 19060), (4765, 17112), (5704, 14295), (5718, 14260), (7130, 11436), (7624, 10695), (8556, 9530)]