128525620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{90511}}^1$

素因数の和:90591

約数の個数: 24

約数和(自身を含む): 273708288

約数和(自身を除く): 145182668

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 90511, 181022, 362044, 452555, 905110, 1810220, 6426281, 12852562, 25705124, 32131405, 64262810, 128525620]

約数ペア:

[(1, 128525620), (2, 64262810), (4, 32131405), (5, 25705124), (10, 12852562), (20, 6426281), (71, 1810220), (142, 905110), (284, 452555), (355, 362044), (710, 181022), (1420, 90511)]