20447735

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{307}}^1$

素因数の和:503

約数の個数: 32

約数和(自身を含む): 30868992

約数和(自身を除く): 10421257

約数列:

[1, 5, 7, 11, 35, 55, 77, 173, 307, 385, 865, 1211, 1535, 1903, 2149, 3377, 6055, 9515, 10745, 13321, 16885, 23639, 53111, 66605, 118195, 265555, 371777, 584221, 1858885, 2921105, 4089547, 20447735]

約数ペア:

[(1, 20447735), (5, 4089547), (7, 2921105), (11, 1858885), (35, 584221), (55, 371777), (77, 265555), (173, 118195), (307, 66605), (385, 53111), (865, 23639), (1211, 16885), (1535, 13321), (1903, 10745), (2149, 9515), (3377, 6055)]