20316915

素因数分解:

$3^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1279}}^1$

素因数の和:1643

約数の個数: 24

約数和(自身を含む): 35343360

約数和(自身を除く): 15026445

約数列:

[1, 3, 5, 9, 15, 45, 353, 1059, 1279, 1765, 3177, 3837, 5295, 6395, 11511, 15885, 19185, 57555, 451487, 1354461, 2257435, 4063383, 6772305, 20316915]

約数ペア:

[(1, 20316915), (3, 6772305), (5, 4063383), (9, 2257435), (15, 1354461), (45, 451487), (353, 57555), (1059, 19185), (1279, 15885), (1765, 11511), (3177, 6395), (3837, 5295)]