28810730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{221621}}^1$

素因数の和:221641

約数の個数: 16

約数和(自身を含む): 55848744

約数和(自身を除く): 27038014

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 221621, 443242, 1108105, 2216210, 2881073, 5762146, 14405365, 28810730]

約数ペア:

[(1, 28810730), (2, 14405365), (5, 5762146), (10, 2881073), (13, 2216210), (26, 1108105), (65, 443242), (130, 221621)]