21147425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2099}}^1$

素因数の和:2153

約数の個数: 24

約数和(自身を含む): 29164800

約数和(自身を除く): 8017375

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 2015, 2099, 10075, 10495, 27287, 52475, 65069, 136435, 325345, 682175, 845897, 1626725, 4229485, 21147425]

約数ペア:

[(1, 21147425), (5, 4229485), (13, 1626725), (25, 845897), (31, 682175), (65, 325345), (155, 136435), (325, 65069), (403, 52475), (775, 27287), (2015, 10495), (2099, 10075)]