19818197

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{3041}}^1$

素因数の和:3081

約数の個数: 16

約数和(自身を含む): 24336000

約数和(自身を除く): 4517803

約数列:

[1, 7, 19, 49, 133, 343, 931, 3041, 6517, 21287, 57779, 149009, 404453, 1043063, 2831171, 19818197]

約数ペア:

[(1, 19818197), (7, 2831171), (19, 1043063), (49, 404453), (133, 149009), (343, 57779), (931, 21287), (3041, 6517)]