28717390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{220903}}^1$

素因数の和:220923

約数の個数: 16

約数和(自身を含む): 55667808

約数和(自身を除く): 26950418

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 220903, 441806, 1104515, 2209030, 2871739, 5743478, 14358695, 28717390]

約数ペア:

[(1, 28717390), (2, 14358695), (5, 5743478), (10, 2871739), (13, 2209030), (26, 1104515), (65, 441806), (130, 220903)]