20816345

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 29168640

約数和(自身を除く): 8352295

約数列:

[1, 5, 11, 29, 31, 55, 145, 155, 319, 341, 421, 899, 1595, 1705, 2105, 4495, 4631, 9889, 12209, 13051, 23155, 49445, 61045, 65255, 134299, 143561, 378479, 671495, 717805, 1892395, 4163269, 20816345]

約数ペア:

[(1, 20816345), (5, 4163269), (11, 1892395), (29, 717805), (31, 671495), (55, 378479), (145, 143561), (155, 134299), (319, 65255), (341, 61045), (421, 49445), (899, 23155), (1595, 13051), (1705, 12209), (2105, 9889), (4495, 4631)]