28242020

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{10159}}^1$

素因数の和:10307

約数の個数: 24

約数和(自身を含む): 59740800

約数和(自身を除く): 31498780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 10159, 20318, 40636, 50795, 101590, 203180, 1412101, 2824202, 5648404, 7060505, 14121010, 28242020]

約数ペア:

[(1, 28242020), (2, 14121010), (4, 7060505), (5, 5648404), (10, 2824202), (20, 1412101), (139, 203180), (278, 101590), (556, 50795), (695, 40636), (1390, 20318), (2780, 10159)]