21158907

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{757}}^1$

素因数の和:800

約数の個数: 32

約数和(自身を含む): 35510784

約数和(自身を除く): 14351877

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 757, 847, 1331, 2271, 2541, 3993, 5299, 8327, 9317, 15897, 24981, 27951, 58289, 91597, 174867, 274791, 641179, 1007567, 1923537, 3022701, 7052969, 21158907]

約数ペア:

[(1, 21158907), (3, 7052969), (7, 3022701), (11, 1923537), (21, 1007567), (33, 641179), (77, 274791), (121, 174867), (231, 91597), (363, 58289), (757, 27951), (847, 24981), (1331, 15897), (2271, 9317), (2541, 8327), (3993, 5299)]