21705607

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2791}}^1$

素因数の和:2910

約数の個数: 16

約数和(自身を含む): 27339264

約数和(自身を除く): 5633657

約数列:

[1, 7, 11, 77, 101, 707, 1111, 2791, 7777, 19537, 30701, 214907, 281891, 1973237, 3100801, 21705607]

約数ペア:

[(1, 21705607), (7, 3100801), (11, 1973237), (77, 281891), (101, 214907), (707, 30701), (1111, 19537), (2791, 7777)]