20126905

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1459}}^1$

素因数の和:1584

約数の個数: 16

約数和(自身を含む): 25228800

約数和(自身を除く): 5101895

約数列:

[1, 5, 31, 89, 155, 445, 1459, 2759, 7295, 13795, 45229, 129851, 226145, 649255, 4025381, 20126905]

約数ペア:

[(1, 20126905), (5, 4025381), (31, 649255), (89, 226145), (155, 129851), (445, 45229), (1459, 13795), (2759, 7295)]