21649625

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:234

約数の個数: 32

約数和(自身を含む): 28833792

約数和(自身を除く): 7184167

約数列:

[1, 5, 25, 31, 37, 125, 151, 155, 185, 755, 775, 925, 1147, 3775, 3875, 4625, 4681, 5587, 5735, 18875, 23405, 27935, 28675, 117025, 139675, 143375, 173197, 585125, 698375, 865985, 4329925, 21649625]

約数ペア:

[(1, 21649625), (5, 4329925), (25, 865985), (31, 698375), (37, 585125), (125, 173197), (151, 143375), (155, 139675), (185, 117025), (755, 28675), (775, 27935), (925, 23405), (1147, 18875), (3775, 5735), (3875, 5587), (4625, 4681)]