21000209009

素因数分解:

${\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{12331303}}^1$

素因数の和:12331447

約数の個数: 8

約数和(自身を含む): 22788249792

約数和(自身を除く): 1788040783

約数列:

[1, 13, 131, 1703, 12331303, 160306939, 1615400693, 21000209009]

約数ペア:

[(1, 21000209009), (13, 1615400693), (131, 160306939), (1703, 12331303)]