2021308025

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{668201}}^1$

素因数の和:668233

約数の個数: 18

約数和(自身を含む): 2754996846

約数和(自身を除く): 733688821

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 668201, 3341005, 7350211, 16705025, 36751055, 80852321, 183755275, 404261605, 2021308025]

約数ペア:

[(1, 2021308025), (5, 404261605), (11, 183755275), (25, 80852321), (55, 36751055), (121, 16705025), (275, 7350211), (605, 3341005), (3025, 668201)]