15499960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{281}}^1$

素因数の和:496

約数の個数: 64

約数和(自身を含む): 40201920

約数和(自身を除く): 24701960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 197, 280, 281, 394, 562, 788, 985, 1124, 1379, 1405, 1576, 1967, 1970, 2248, 2758, 2810, 3934, 3940, 5516, 5620, 6895, 7868, 7880, 9835, 11032, 11240, 13790, 15736, 19670, 27580, 39340, 55160, 55357, 78680, 110714, 221428, 276785, 387499, 442856, 553570, 774998, 1107140, 1549996, 1937495, 2214280, 3099992, 3874990, 7749980, 15499960]

約数ペア:

[(1, 15499960), (2, 7749980), (4, 3874990), (5, 3099992), (7, 2214280), (8, 1937495), (10, 1549996), (14, 1107140), (20, 774998), (28, 553570), (35, 442856), (40, 387499), (56, 276785), (70, 221428), (140, 110714), (197, 78680), (280, 55357), (281, 55160), (394, 39340), (562, 27580), (788, 19670), (985, 15736), (1124, 13790), (1379, 11240), (1405, 11032), (1576, 9835), (1967, 7880), (1970, 7868), (2248, 6895), (2758, 5620), (2810, 5516), (3934, 3940)]