20986497

素因数分解:

$3^2\times 7^1\times {\mathrm{179}}^1\times {\mathrm{1861}}^1$

素因数の和:2053

約数の個数: 24

約数和(自身を含む): 34856640

約数和(自身を除く): 13870143

約数列:

[1, 3, 7, 9, 21, 63, 179, 537, 1253, 1611, 1861, 3759, 5583, 11277, 13027, 16749, 39081, 117243, 333119, 999357, 2331833, 2998071, 6995499, 20986497]

約数ペア:

[(1, 20986497), (3, 6995499), (7, 2998071), (9, 2331833), (21, 999357), (63, 333119), (179, 117243), (537, 39081), (1253, 16749), (1611, 13027), (1861, 11277), (3759, 5583)]