31219640

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{6907}}^1$

素因数の和:7031

約数の個数: 32

約数和(自身を含む): 70876080

約数和(自身を除く): 39656440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 6907, 13814, 27628, 34535, 55256, 69070, 138140, 276280, 780491, 1560982, 3121964, 3902455, 6243928, 7804910, 15609820, 31219640]

約数ペア:

[(1, 31219640), (2, 15609820), (4, 7804910), (5, 6243928), (8, 3902455), (10, 3121964), (20, 1560982), (40, 780491), (113, 276280), (226, 138140), (452, 69070), (565, 55256), (904, 34535), (1130, 27628), (2260, 13814), (4520, 6907)]