20585890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^3\times {\mathrm{937}}^1$

素因数の和:983

約数の個数: 32

約数和(自身を含む): 40183920

約数和(自身を除く): 19598030

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 937, 1690, 1874, 2197, 4394, 4685, 9370, 10985, 12181, 21970, 24362, 60905, 121810, 158353, 316706, 791765, 1583530, 2058589, 4117178, 10292945, 20585890]

約数ペア:

[(1, 20585890), (2, 10292945), (5, 4117178), (10, 2058589), (13, 1583530), (26, 791765), (65, 316706), (130, 158353), (169, 121810), (338, 60905), (845, 24362), (937, 21970), (1690, 12181), (1874, 10985), (2197, 9370), (4394, 4685)]