20554079

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{787}}^1$

素因数の和:855

約数の個数: 24

約数和(自身を含む): 26410608

約数和(自身を除く): 5856529

約数列:

[1, 7, 13, 41, 49, 91, 287, 533, 637, 787, 2009, 3731, 5509, 10231, 26117, 32267, 38563, 71617, 225869, 419471, 501319, 1581083, 2936297, 20554079]

約数ペア:

[(1, 20554079), (7, 2936297), (13, 1581083), (41, 501319), (49, 419471), (91, 225869), (287, 71617), (533, 38563), (637, 32267), (787, 26117), (2009, 10231), (3731, 5509)]