81961555

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{3083}}^1$

素因数の和:3510

約数の個数: 16

約数和(自身を含む): 106212960

約数和(自身を除く): 24251405

約数列:

[1, 5, 13, 65, 409, 2045, 3083, 5317, 15415, 26585, 40079, 200395, 1260947, 6304735, 16392311, 81961555]

約数ペア:

[(1, 81961555), (5, 16392311), (13, 6304735), (65, 1260947), (409, 200395), (2045, 40079), (3083, 26585), (5317, 15415)]