31056820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{21871}}^1$

素因数の和:21951

約数の個数: 24

約数和(自身を含む): 66140928

約数和(自身を除く): 35084108

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 21871, 43742, 87484, 109355, 218710, 437420, 1552841, 3105682, 6211364, 7764205, 15528410, 31056820]

約数ペア:

[(1, 31056820), (2, 15528410), (4, 7764205), (5, 6211364), (10, 3105682), (20, 1552841), (71, 437420), (142, 218710), (284, 109355), (355, 87484), (710, 43742), (1420, 21871)]