19780495

素因数分解:

$5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{3793}}^1$

素因数の和:3954

約数の個数: 16

約数和(自身を含む): 27316800

約数和(自身を除く): 7536305

約数列:

[1, 5, 7, 35, 149, 745, 1043, 3793, 5215, 18965, 26551, 132755, 565157, 2825785, 3956099, 19780495]

約数ペア:

[(1, 19780495), (5, 3956099), (7, 2825785), (35, 565157), (149, 132755), (745, 26551), (1043, 18965), (3793, 5215)]