21278804

素因数分解:

$2^2\times {\mathrm{113}}^1\times {\mathrm{179}}^1\times {\mathrm{263}}^1$

素因数の和:559

約数の個数: 24

約数和(自身を含む): 37920960

約数和(自身を除く): 16642156

約数列:

[1, 2, 4, 113, 179, 226, 263, 358, 452, 526, 716, 1052, 20227, 29719, 40454, 47077, 59438, 80908, 94154, 118876, 188308, 5319701, 10639402, 21278804]

約数ペア:

[(1, 21278804), (2, 10639402), (4, 5319701), (113, 188308), (179, 118876), (226, 94154), (263, 80908), (358, 59438), (452, 47077), (526, 40454), (716, 29719), (1052, 20227)]