20320885

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1571}}^1$

素因数の和:1788

約数の個数: 16

約数和(自身を含む): 26409600

約数和(自身を除く): 6088715

約数列:

[1, 5, 13, 65, 199, 995, 1571, 2587, 7855, 12935, 20423, 102115, 312629, 1563145, 4064177, 20320885]

約数ペア:

[(1, 20320885), (5, 4064177), (13, 1563145), (65, 312629), (199, 102115), (995, 20423), (1571, 12935), (2587, 7855)]