217339915

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{8297}}^1$

素因数の和:8359

約数の個数: 24

約数和(自身を含む): 291558528

約数和(自身を除く): 74218613

約数列:

[1, 5, 13, 31, 65, 155, 169, 403, 845, 2015, 5239, 8297, 26195, 41485, 107861, 257207, 539305, 1286035, 1402193, 3343691, 7010965, 16718455, 43467983, 217339915]

約数ペア:

[(1, 217339915), (5, 43467983), (13, 16718455), (31, 7010965), (65, 3343691), (155, 1402193), (169, 1286035), (403, 539305), (845, 257207), (2015, 107861), (5239, 41485), (8297, 26195)]