20816135

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1\times {\mathrm{307}}^1$

素因数の和:574

約数の個数: 16

約数和(自身を含む): 25546752

約数和(自身を除く): 4730617

約数列:

[1, 5, 71, 191, 307, 355, 955, 1535, 13561, 21797, 58637, 67805, 108985, 293185, 4163227, 20816135]

約数ペア:

[(1, 20816135), (5, 4163227), (71, 293185), (191, 108985), (307, 67805), (355, 58637), (955, 21797), (1535, 13561)]