28557800

素因数分解:

$2^3\times 5^2\times {\mathrm{142789}}^1$

素因数の和:142805

約数の個数: 24

約数和(自身を含む): 66397350

約数和(自身を除く): 37839550

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 142789, 285578, 571156, 713945, 1142312, 1427890, 2855780, 3569725, 5711560, 7139450, 14278900, 28557800]

約数ペア:

[(1, 28557800), (2, 14278900), (4, 7139450), (5, 5711560), (8, 3569725), (10, 2855780), (20, 1427890), (25, 1142312), (40, 713945), (50, 571156), (100, 285578), (200, 142789)]