27980720

素因数分解:

$2^4\times 5^1\times {\mathrm{349759}}^1$

素因数の和:349772

約数の個数: 20

約数和(自身を含む): 65055360

約数和(自身を除く): 37074640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 349759, 699518, 1399036, 1748795, 2798072, 3497590, 5596144, 6995180, 13990360, 27980720]

約数ペア:

[(1, 27980720), (2, 13990360), (4, 6995180), (5, 5596144), (8, 3497590), (10, 2798072), (16, 1748795), (20, 1399036), (40, 699518), (80, 349759)]