21195951

素因数分解:

$3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{9433}}^1$

素因数の和:9550

約数の個数: 16

約数和(自身を含む): 32603904

約数和(自身を除く): 11407953

約数列:

[1, 3, 7, 21, 107, 321, 749, 2247, 9433, 28299, 66031, 198093, 1009331, 3027993, 7065317, 21195951]

約数ペア:

[(1, 21195951), (3, 7065317), (7, 3027993), (21, 1009331), (107, 198093), (321, 66031), (749, 28299), (2247, 9433)]