642144385

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{32621}}^1$

素因数の和:32784

約数の個数: 16

約数和(自身を含む): 801718272

約数和(自身を除く): 159573887

約数列:

[1, 5, 31, 127, 155, 635, 3937, 19685, 32621, 163105, 1011251, 4142867, 5056255, 20714335, 128428877, 642144385]

約数ペア:

[(1, 642144385), (5, 128428877), (31, 20714335), (127, 5056255), (155, 4142867), (635, 1011251), (3937, 163105), (19685, 32621)]