12555640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4421}}^1$

素因数の和:4503

約数の個数: 32

約数和(自身を含む): 28654560

約数和(自身を除く): 16098920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 4421, 8842, 17684, 22105, 35368, 44210, 88420, 176840, 313891, 627782, 1255564, 1569455, 2511128, 3138910, 6277820, 12555640]

約数ペア:

[(1, 12555640), (2, 6277820), (4, 3138910), (5, 2511128), (8, 1569455), (10, 1255564), (20, 627782), (40, 313891), (71, 176840), (142, 88420), (284, 44210), (355, 35368), (568, 22105), (710, 17684), (1420, 8842), (2840, 4421)]