20865544

素因数分解:

$2^3\times 7^1\times {\mathrm{409}}^1\times {\mathrm{911}}^1$

素因数の和:1333

約数の個数: 32

約数和(自身を含む): 44870400

約数和(自身を除く): 24004856

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 409, 818, 911, 1636, 1822, 2863, 3272, 3644, 5726, 6377, 7288, 11452, 12754, 22904, 25508, 51016, 372599, 745198, 1490396, 2608193, 2980792, 5216386, 10432772, 20865544]

約数ペア:

[(1, 20865544), (2, 10432772), (4, 5216386), (7, 2980792), (8, 2608193), (14, 1490396), (28, 745198), (56, 372599), (409, 51016), (818, 25508), (911, 22904), (1636, 12754), (1822, 11452), (2863, 7288), (3272, 6377), (3644, 5726)]