21812125

素因数分解:

$5^3\times {\mathrm{211}}^1\times {\mathrm{827}}^1$

素因数の和:1053

約数の個数: 16

約数和(自身を含む): 27383616

約数和(自身を除く): 5571491

約数列:

[1, 5, 25, 125, 211, 827, 1055, 4135, 5275, 20675, 26375, 103375, 174497, 872485, 4362425, 21812125]

約数ペア:

[(1, 21812125), (5, 4362425), (25, 872485), (125, 174497), (211, 103375), (827, 26375), (1055, 20675), (4135, 5275)]