20802875

素因数分解:

$5^3\times {\mathrm{163}}^1\times {\mathrm{1021}}^1$

素因数の和:1199

約数の個数: 16

約数和(自身を含む): 26146848

約数和(自身を除く): 5343973

約数列:

[1, 5, 25, 125, 163, 815, 1021, 4075, 5105, 20375, 25525, 127625, 166423, 832115, 4160575, 20802875]

約数ペア:

[(1, 20802875), (5, 4160575), (25, 832115), (125, 166423), (163, 127625), (815, 25525), (1021, 20375), (4075, 5105)]