20124455

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{4621}}^1$

素因数の和:4706

約数の個数: 16

約数和(自身を含む): 26400864

約数和(自身を除く): 6276409

約数列:

[1, 5, 13, 65, 67, 335, 871, 4355, 4621, 23105, 60073, 300365, 309607, 1548035, 4024891, 20124455]

約数ペア:

[(1, 20124455), (5, 4024891), (13, 1548035), (65, 309607), (67, 300365), (335, 60073), (871, 23105), (4355, 4621)]