21135393

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{751}}^1$

素因数の和:869

約数の個数: 24

約数和(自身を含む): 31674240

約数和(自身を除く): 10538847

約数列:

[1, 3, 9, 53, 59, 159, 177, 477, 531, 751, 2253, 3127, 6759, 9381, 28143, 39803, 44309, 119409, 132927, 358227, 398781, 2348377, 7045131, 21135393]

約数ペア:

[(1, 21135393), (3, 7045131), (9, 2348377), (53, 398781), (59, 358227), (159, 132927), (177, 119409), (477, 44309), (531, 39803), (751, 28143), (2253, 9381), (3127, 6759)]