520021305

素因数分解:

$3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{27449}}^1$

素因数の和:27881

約数の個数: 24

約数和(自身を含む): 903544200

約数和(自身を除く): 383522895

約数列:

[1, 3, 5, 9, 15, 45, 421, 1263, 2105, 3789, 6315, 18945, 27449, 82347, 137245, 247041, 411735, 1235205, 11556029, 34668087, 57780145, 104004261, 173340435, 520021305]

約数ペア:

[(1, 520021305), (3, 173340435), (5, 104004261), (9, 57780145), (15, 34668087), (45, 11556029), (421, 1235205), (1263, 411735), (2105, 247041), (3789, 137245), (6315, 82347), (18945, 27449)]