20006945

素因数分解:

$5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{643}}^1$

素因数の和:789

約数の個数: 24

約数和(自身を含む): 28191744

約数和(自身を除く): 8184799

約数列:

[1, 5, 7, 35, 49, 127, 245, 635, 643, 889, 3215, 4445, 4501, 6223, 22505, 31115, 31507, 81661, 157535, 408305, 571627, 2858135, 4001389, 20006945]

約数ペア:

[(1, 20006945), (5, 4001389), (7, 2858135), (35, 571627), (49, 408305), (127, 157535), (245, 81661), (635, 31507), (643, 31115), (889, 22505), (3215, 6223), (4445, 4501)]