21916778

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{3527}}^1$

素因数の和:3781

約数の個数: 16

約数和(自身を含む): 35562240

約数和(自身を除く): 13645462

約数列:

[1, 2, 13, 26, 239, 478, 3107, 3527, 6214, 7054, 45851, 91702, 842953, 1685906, 10958389, 21916778]

約数ペア:

[(1, 21916778), (2, 10958389), (13, 1685906), (26, 842953), (239, 91702), (478, 45851), (3107, 7054), (3527, 6214)]