51122800

素因数分解:

$2^4\times 5^2\times {\mathrm{127807}}^1$

素因数の和:127825

約数の個数: 30

約数和(自身を含む): 122823488

約数和(自身を除く): 71700688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 127807, 255614, 511228, 639035, 1022456, 1278070, 2044912, 2556140, 3195175, 5112280, 6390350, 10224560, 12780700, 25561400, 51122800]

約数ペア:

[(1, 51122800), (2, 25561400), (4, 12780700), (5, 10224560), (8, 6390350), (10, 5112280), (16, 3195175), (20, 2556140), (25, 2044912), (40, 1278070), (50, 1022456), (80, 639035), (100, 511228), (200, 255614), (400, 127807)]