99437980

素因数分解:

$2^2\times 5^1\times {\mathrm{1949}}^1\times {\mathrm{2551}}^1$

素因数の和:4509

約数の個数: 24

約数和(自身を含む): 209008800

約数和(自身を除く): 109570820

約数列:

[1, 2, 4, 5, 10, 20, 1949, 2551, 3898, 5102, 7796, 9745, 10204, 12755, 19490, 25510, 38980, 51020, 4971899, 9943798, 19887596, 24859495, 49718990, 99437980]

約数ペア:

[(1, 99437980), (2, 49718990), (4, 24859495), (5, 19887596), (10, 9943798), (20, 4971899), (1949, 51020), (2551, 38980), (3898, 25510), (5102, 19490), (7796, 12755), (9745, 10204)]