20212625

素因数分解:

$5^3\times {\mathrm{101}}^1\times {\mathrm{1601}}^1$

素因数の和:1717

約数の個数: 16

約数和(自身を含む): 25491024

約数和(自身を除く): 5278399

約数列:

[1, 5, 25, 101, 125, 505, 1601, 2525, 8005, 12625, 40025, 161701, 200125, 808505, 4042525, 20212625]

約数ペア:

[(1, 20212625), (5, 4042525), (25, 808505), (101, 200125), (125, 161701), (505, 40025), (1601, 12625), (2525, 8005)]