19502405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{1987}}^1$

素因数の和:2156

約数の個数: 16

約数和(自身を含む): 25382784

約数和(自身を除く): 5880379

約数列:

[1, 5, 13, 65, 151, 755, 1963, 1987, 9815, 9935, 25831, 129155, 300037, 1500185, 3900481, 19502405]

約数ペア:

[(1, 19502405), (5, 3900481), (13, 1500185), (65, 300037), (151, 129155), (755, 25831), (1963, 9935), (1987, 9815)]