20128556

素因数分解:

$2^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{3407}}^1$

素因数の和:3629

約数の個数: 24

約数和(自身を含む): 40459776

約数和(自身を除く): 20331220

約数列:

[1, 2, 4, 7, 14, 28, 211, 422, 844, 1477, 2954, 3407, 5908, 6814, 13628, 23849, 47698, 95396, 718877, 1437754, 2875508, 5032139, 10064278, 20128556]

約数ペア:

[(1, 20128556), (2, 10064278), (4, 5032139), (7, 2875508), (14, 1437754), (28, 718877), (211, 95396), (422, 47698), (844, 23849), (1477, 13628), (2954, 6814), (3407, 5908)]