21107416

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{239857}}^1$

素因数の和:239874

約数の個数: 16

約数和(自身を含む): 43174440

約数和(自身を除く): 22067024

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 239857, 479714, 959428, 1918856, 2638427, 5276854, 10553708, 21107416]

約数ペア:

[(1, 21107416), (2, 10553708), (4, 5276854), (8, 2638427), (11, 1918856), (22, 959428), (44, 479714), (88, 239857)]