20407205

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{44851}}^1$

素因数の和:44876

約数の個数: 16

約数和(自身を含む): 30140544

約数和(自身を除く): 9733339

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 44851, 224255, 313957, 583063, 1569785, 2915315, 4081441, 20407205]

約数ペア:

[(1, 20407205), (5, 4081441), (7, 2915315), (13, 1569785), (35, 583063), (65, 313957), (91, 224255), (455, 44851)]