21909758

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{4871}}^1$

素因数の和:5059

約数の個数: 16

約数和(自身を含む): 35604576

約数和(自身を除く): 13694818

約数列:

[1, 2, 13, 26, 173, 346, 2249, 4498, 4871, 9742, 63323, 126646, 842683, 1685366, 10954879, 21909758]

約数ペア:

[(1, 21909758), (2, 10954879), (13, 1685366), (26, 842683), (173, 126646), (346, 63323), (2249, 9742), (4498, 4871)]