28140400

素因数分解:

$2^4\times 5^2\times {\mathrm{70351}}^1$

素因数の和:70369

約数の個数: 30

約数和(自身を含む): 67608272

約数和(自身を除く): 39467872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 70351, 140702, 281404, 351755, 562808, 703510, 1125616, 1407020, 1758775, 2814040, 3517550, 5628080, 7035100, 14070200, 28140400]

約数ペア:

[(1, 28140400), (2, 14070200), (4, 7035100), (5, 5628080), (8, 3517550), (10, 2814040), (16, 1758775), (20, 1407020), (25, 1125616), (40, 703510), (50, 562808), (80, 351755), (100, 281404), (200, 140702), (400, 70351)]