20403271

素因数分解:

$7^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1\times {\mathrm{199}}^1$

素因数の和:454

約数の個数: 16

約数和(自身を含む): 23833600

約数和(自身を除く): 3430329

約数列:

[1, 7, 97, 151, 199, 679, 1057, 1393, 14647, 19303, 30049, 102529, 135121, 210343, 2914753, 20403271]

約数ペア:

[(1, 20403271), (7, 2914753), (97, 210343), (151, 135121), (199, 102529), (679, 30049), (1057, 19303), (1393, 14647)]