8404240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8081}}^1$

素因数の和:8107

約数の個数: 40

約数和(自身を含む): 21045528

約数和(自身を除く): 12641288

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 8081, 16162, 32324, 40405, 64648, 80810, 105053, 129296, 161620, 210106, 323240, 420212, 525265, 646480, 840424, 1050530, 1680848, 2101060, 4202120, 8404240]

約数ペア:

[(1, 8404240), (2, 4202120), (4, 2101060), (5, 1680848), (8, 1050530), (10, 840424), (13, 646480), (16, 525265), (20, 420212), (26, 323240), (40, 210106), (52, 161620), (65, 129296), (80, 105053), (104, 80810), (130, 64648), (208, 40405), (260, 32324), (520, 16162), (1040, 8081)]