20211875

素因数分解:

$5^4\times {\mathrm{73}}^1\times {\mathrm{443}}^1$

素因数の和:536

約数の個数: 20

約数和(自身を含む): 25660536

約数和(自身を除く): 5448661

約数列:

[1, 5, 25, 73, 125, 365, 443, 625, 1825, 2215, 9125, 11075, 32339, 45625, 55375, 161695, 276875, 808475, 4042375, 20211875]

約数ペア:

[(1, 20211875), (5, 4042375), (25, 808475), (73, 276875), (125, 161695), (365, 55375), (443, 45625), (625, 32339), (1825, 11075), (2215, 9125)]