21570575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2141}}^1$

素因数の和:2195

約数の個数: 24

約数和(自身を含む): 29748096

約数和(自身を除く): 8177521

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 2015, 2141, 10075, 10705, 27833, 53525, 66371, 139165, 331855, 695825, 862823, 1659275, 4314115, 21570575]

約数ペア:

[(1, 21570575), (5, 4314115), (13, 1659275), (25, 862823), (31, 695825), (65, 331855), (155, 139165), (325, 66371), (403, 53525), (775, 27833), (2015, 10705), (2141, 10075)]