20149975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{719}}^1$

素因数の和:807

約数の個数: 24

約数和(自身を含む): 26784000

約数和(自身を除く): 6634025

約数列:

[1, 5, 19, 25, 59, 95, 295, 475, 719, 1121, 1475, 3595, 5605, 13661, 17975, 28025, 42421, 68305, 212105, 341525, 805999, 1060525, 4029995, 20149975]

約数ペア:

[(1, 20149975), (5, 4029995), (19, 1060525), (25, 805999), (59, 341525), (95, 212105), (295, 68305), (475, 42421), (719, 28025), (1121, 17975), (1475, 13661), (3595, 5605)]