20880782

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{1249}}^1$

素因数の和:1907

約数の個数: 16

約数和(自身を含む): 33810000

約数和(自身を除く): 12929218

約数列:

[1, 2, 13, 26, 643, 1249, 1286, 2498, 8359, 16237, 16718, 32474, 803107, 1606214, 10440391, 20880782]

約数ペア:

[(1, 20880782), (2, 10440391), (13, 1606214), (26, 803107), (643, 32474), (1249, 16718), (1286, 16237), (2498, 8359)]