127404680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{499}}^1$

素因数の和:1014

約数の個数: 64

約数和(自身を含む): 309960000

約数和(自身を除く): 182555320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 491, 499, 520, 982, 998, 1964, 1996, 2455, 2495, 3928, 3992, 4910, 4990, 6383, 6487, 9820, 9980, 12766, 12974, 19640, 19960, 25532, 25948, 31915, 32435, 51064, 51896, 63830, 64870, 127660, 129740, 245009, 255320, 259480, 490018, 980036, 1225045, 1960072, 2450090, 3185117, 4900180, 6370234, 9800360, 12740468, 15925585, 25480936, 31851170, 63702340, 127404680]

約数ペア:

[(1, 127404680), (2, 63702340), (4, 31851170), (5, 25480936), (8, 15925585), (10, 12740468), (13, 9800360), (20, 6370234), (26, 4900180), (40, 3185117), (52, 2450090), (65, 1960072), (104, 1225045), (130, 980036), (260, 490018), (491, 259480), (499, 255320), (520, 245009), (982, 129740), (998, 127660), (1964, 64870), (1996, 63830), (2455, 51896), (2495, 51064), (3928, 32435), (3992, 31915), (4910, 25948), (4990, 25532), (6383, 19960), (6487, 19640), (9820, 12974), (9980, 12766)]