131995480

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{389}}^1\times {\mathrm{499}}^1$

素因数の和:916

約数の個数: 64

約数和(自身を含む): 315900000

約数和(自身を除く): 183904520

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 389, 499, 680, 778, 998, 1556, 1945, 1996, 2495, 3112, 3890, 3992, 4990, 6613, 7780, 8483, 9980, 13226, 15560, 16966, 19960, 26452, 33065, 33932, 42415, 52904, 66130, 67864, 84830, 132260, 169660, 194111, 264520, 339320, 388222, 776444, 970555, 1552888, 1941110, 3299887, 3882220, 6599774, 7764440, 13199548, 16499435, 26399096, 32998870, 65997740, 131995480]

約数ペア:

[(1, 131995480), (2, 65997740), (4, 32998870), (5, 26399096), (8, 16499435), (10, 13199548), (17, 7764440), (20, 6599774), (34, 3882220), (40, 3299887), (68, 1941110), (85, 1552888), (136, 970555), (170, 776444), (340, 388222), (389, 339320), (499, 264520), (680, 194111), (778, 169660), (998, 132260), (1556, 84830), (1945, 67864), (1996, 66130), (2495, 52904), (3112, 42415), (3890, 33932), (3992, 33065), (4990, 26452), (6613, 19960), (7780, 16966), (8483, 15560), (9980, 13226)]