21809853

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{9811}}^1$

素因数の和:9849

約数の個数: 24

約数和(自身を含む): 35715680

約数和(自身を除く): 13905827

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 9811, 29433, 88299, 127543, 186409, 382629, 559227, 1147887, 1677681, 2423317, 7269951, 21809853]

約数ペア:

[(1, 21809853), (3, 7269951), (9, 2423317), (13, 1677681), (19, 1147887), (39, 559227), (57, 382629), (117, 186409), (171, 127543), (247, 88299), (741, 29433), (2223, 9811)]