20861875

素因数分解:

$5^4\times {\mathrm{29}}^1\times {\mathrm{1151}}^1$

素因数の和:1200

約数の個数: 20

約数和(自身を含む): 26991360

約数和(自身を除く): 6129485

約数列:

[1, 5, 25, 29, 125, 145, 625, 725, 1151, 3625, 5755, 18125, 28775, 33379, 143875, 166895, 719375, 834475, 4172375, 20861875]

約数ペア:

[(1, 20861875), (5, 4172375), (25, 834475), (29, 719375), (125, 166895), (145, 143875), (625, 33379), (725, 28775), (1151, 18125), (3625, 5755)]