20851792415

素因数分解:

$5^1\times {\mathrm{31}}^2\times {\mathrm{43}}^2\times {\mathrm{2347}}^1$

素因数の和:2500

約数の個数: 36

約数和(自身を含む): 26481903912

約数和(自身を除く): 5630111497

約数列:

[1, 5, 31, 43, 155, 215, 961, 1333, 1849, 2347, 4805, 6665, 9245, 11735, 41323, 57319, 72757, 100921, 206615, 286595, 363785, 504605, 1776889, 2255467, 3128551, 4339603, 8884445, 11277335, 15642755, 21698015, 96985081, 134527693, 484925405, 672638465, 4170358483, 20851792415]

約数ペア:

[(1, 20851792415), (5, 4170358483), (31, 672638465), (43, 484925405), (155, 134527693), (215, 96985081), (961, 21698015), (1333, 15642755), (1849, 11277335), (2347, 8884445), (4805, 4339603), (6665, 3128551), (9245, 2255467), (11735, 1776889), (41323, 504605), (57319, 363785), (72757, 286595), (100921, 206615)]