81260575

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{26863}}^1$

素因数の和:26895

約数の個数: 18

約数和(自身を含む): 110760272

約数和(自身を除く): 29499697

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 26863, 134315, 295493, 671575, 1477465, 3250423, 7387325, 16252115, 81260575]

約数ペア:

[(1, 81260575), (5, 16252115), (11, 7387325), (25, 3250423), (55, 1477465), (121, 671575), (275, 295493), (605, 134315), (3025, 26863)]