20970170

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161309}}^1$

素因数の和:161329

約数の個数: 16

約数和(自身を含む): 40650120

約数和(自身を除く): 19679950

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 161309, 322618, 806545, 1613090, 2097017, 4194034, 10485085, 20970170]

約数ペア:

[(1, 20970170), (2, 10485085), (5, 4194034), (10, 2097017), (13, 1613090), (26, 806545), (65, 322618), (130, 161309)]