20686760

素因数分解:

$2^3\times 5^1\times {\mathrm{517169}}^1$

素因数の和:517180

約数の個数: 16

約数和(自身を含む): 46545300

約数和(自身を除く): 25858540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 517169, 1034338, 2068676, 2585845, 4137352, 5171690, 10343380, 20686760]

約数ペア:

[(1, 20686760), (2, 10343380), (4, 5171690), (5, 4137352), (8, 2585845), (10, 2068676), (20, 1034338), (40, 517169)]