21692881

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{503}}^1$

素因数の和:672

約数の個数: 16

約数和(自身を含む): 25498368

約数和(自身を除く): 3805487

約数列:

[1, 7, 61, 101, 427, 503, 707, 3521, 6161, 30683, 43127, 50803, 214781, 355621, 3098983, 21692881]

約数ペア:

[(1, 21692881), (7, 3098983), (61, 355621), (101, 214781), (427, 50803), (503, 43127), (707, 30683), (3521, 6161)]