18663985

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{881}}^1$

素因数の和:1128

約数の個数: 16

約数和(自身を含む): 23708160

約数和(自身を除く): 5044175

約数列:

[1, 5, 19, 95, 223, 881, 1115, 4237, 4405, 16739, 21185, 83695, 196463, 982315, 3732797, 18663985]

約数ペア:

[(1, 18663985), (5, 3732797), (19, 982315), (95, 196463), (223, 83695), (881, 21185), (1115, 16739), (4237, 4405)]