561875

素因数分解:

$5^4\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:80

約数の個数: 20

約数和(自身を含む): 749760

約数和(自身を除く): 187885

約数列:

[1, 5, 25, 29, 31, 125, 145, 155, 625, 725, 775, 899, 3625, 3875, 4495, 18125, 19375, 22475, 112375, 561875]

約数ペア:

[(1, 561875), (5, 112375), (25, 22475), (29, 19375), (31, 18125), (125, 4495), (145, 3875), (155, 3625), (625, 899), (725, 775)]