20814875

素因数分解:

$5^3\times {\mathrm{89}}^1\times {\mathrm{1871}}^1$

素因数の和:1975

約数の個数: 16

約数和(自身を含む): 26282880

約数和(自身を除く): 5468005

約数列:

[1, 5, 25, 89, 125, 445, 1871, 2225, 9355, 11125, 46775, 166519, 233875, 832595, 4162975, 20814875]

約数ペア:

[(1, 20814875), (5, 4162975), (25, 832595), (89, 233875), (125, 166519), (445, 46775), (1871, 11125), (2225, 9355)]