18659680

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8971}}^1$

素因数の和:8999

約数の個数: 48

約数和(自身を含む): 47479824

約数和(自身を除く): 28820144

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 8971, 17942, 35884, 44855, 71768, 89710, 116623, 143536, 179420, 233246, 287072, 358840, 466492, 583115, 717680, 932984, 1166230, 1435360, 1865968, 2332460, 3731936, 4664920, 9329840, 18659680]

約数ペア:

[(1, 18659680), (2, 9329840), (4, 4664920), (5, 3731936), (8, 2332460), (10, 1865968), (13, 1435360), (16, 1166230), (20, 932984), (26, 717680), (32, 583115), (40, 466492), (52, 358840), (65, 287072), (80, 233246), (104, 179420), (130, 143536), (160, 116623), (208, 89710), (260, 71768), (416, 44855), (520, 35884), (1040, 17942), (2080, 8971)]