21964375

素因数分解:

$5^4\times {\mathrm{113}}^1\times {\mathrm{311}}^1$

素因数の和:444

約数の個数: 20

約数和(自身を含む): 27778608

約数和(自身を除く): 5814233

約数列:

[1, 5, 25, 113, 125, 311, 565, 625, 1555, 2825, 7775, 14125, 35143, 38875, 70625, 175715, 194375, 878575, 4392875, 21964375]

約数ペア:

[(1, 21964375), (5, 4392875), (25, 878575), (113, 194375), (125, 175715), (311, 70625), (565, 38875), (625, 35143), (1555, 14125), (2825, 7775)]