20155681

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3631}}^1$

素因数の和:3712

約数の個数: 16

約数和(自身を含む): 25220608

約数和(自身を除く): 5064927

約数列:

[1, 7, 13, 61, 91, 427, 793, 3631, 5551, 25417, 47203, 221491, 330421, 1550437, 2879383, 20155681]

約数ペア:

[(1, 20155681), (7, 2879383), (13, 1550437), (61, 330421), (91, 221491), (427, 47203), (793, 25417), (3631, 5551)]