20787311

素因数分解:

${\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{463}}^1$

素因数の和:638

約数の個数: 16

約数和(自身を含む): 23385600

約数和(自身を除く): 2598289

約数列:

[1, 17, 19, 139, 323, 463, 2363, 2641, 7871, 8797, 44897, 64357, 149549, 1094069, 1222783, 20787311]

約数ペア:

[(1, 20787311), (17, 1222783), (19, 1094069), (139, 149549), (323, 64357), (463, 44897), (2363, 8797), (2641, 7871)]