20199521675

素因数分解:

$5^2\times {\mathrm{521}}^1\times {\mathrm{1550827}}^1$

素因数の和:1551358

約数の個数: 12

約数和(自身を含む): 25095498696

約数和(自身を除く): 4895977021

約数列:

[1, 5, 25, 521, 2605, 13025, 1550827, 7754135, 38770675, 807980867, 4039904335, 20199521675]

約数ペア:

[(1, 20199521675), (5, 4039904335), (25, 807980867), (521, 38770675), (2605, 7754135), (13025, 1550827)]