21913703

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{1549}}^1$

素因数の和:1646

約数の個数: 16

約数和(自身を含む): 26188800

約数和(自身を除く): 4275097

約数列:

[1, 7, 43, 47, 301, 329, 1549, 2021, 10843, 14147, 66607, 72803, 466249, 509621, 3130529, 21913703]

約数ペア:

[(1, 21913703), (7, 3130529), (43, 509621), (47, 466249), (301, 72803), (329, 66607), (1549, 14147), (2021, 10843)]