31508920

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{6971}}^1$

素因数の和:7095

約数の個数: 32

約数和(自身を含む): 71532720

約数和(自身を除く): 40023800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 6971, 13942, 27884, 34855, 55768, 69710, 139420, 278840, 787723, 1575446, 3150892, 3938615, 6301784, 7877230, 15754460, 31508920]

約数ペア:

[(1, 31508920), (2, 15754460), (4, 7877230), (5, 6301784), (8, 3938615), (10, 3150892), (20, 1575446), (40, 787723), (113, 278840), (226, 139420), (452, 69710), (565, 55768), (904, 34855), (1130, 27884), (2260, 13942), (4520, 6971)]