18235640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6421}}^1$

素因数の和:6503

約数の個数: 32

約数和(自身を含む): 41614560

約数和(自身を除く): 23378920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 6421, 12842, 25684, 32105, 51368, 64210, 128420, 256840, 455891, 911782, 1823564, 2279455, 3647128, 4558910, 9117820, 18235640]

約数ペア:

[(1, 18235640), (2, 9117820), (4, 4558910), (5, 3647128), (8, 2279455), (10, 1823564), (20, 911782), (40, 455891), (71, 256840), (142, 128420), (284, 64210), (355, 51368), (568, 32105), (710, 25684), (1420, 12842), (2840, 6421)]