28242980

素因数分解:

$2^2\times 5^1\times {\mathrm{1069}}^1\times {\mathrm{1321}}^1$

素因数の和:2399

約数の個数: 24

約数和(自身を含む): 59410680

約数和(自身を除く): 31167700

約数列:

[1, 2, 4, 5, 10, 20, 1069, 1321, 2138, 2642, 4276, 5284, 5345, 6605, 10690, 13210, 21380, 26420, 1412149, 2824298, 5648596, 7060745, 14121490, 28242980]

約数ペア:

[(1, 28242980), (2, 14121490), (4, 7060745), (5, 5648596), (10, 2824298), (20, 1412149), (1069, 26420), (1321, 21380), (2138, 13210), (2642, 10690), (4276, 6605), (5284, 5345)]