420475

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{139}}^1$

素因数の和:171

約数の個数: 18

約数和(自身を含む): 577220

約数和(自身を除く): 156745

約数列:

[1, 5, 11, 25, 55, 121, 139, 275, 605, 695, 1529, 3025, 3475, 7645, 16819, 38225, 84095, 420475]

約数ペア:

[(1, 420475), (5, 84095), (11, 38225), (25, 16819), (55, 7645), (121, 3475), (139, 3025), (275, 1529), (605, 695)]