18996400

素因数分解:

$2^4\times 5^2\times {\mathrm{47491}}^1$

素因数の和:47509

約数の個数: 30

約数和(自身を含む): 45639812

約数和(自身を除く): 26643412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 47491, 94982, 189964, 237455, 379928, 474910, 759856, 949820, 1187275, 1899640, 2374550, 3799280, 4749100, 9498200, 18996400]

約数ペア:

[(1, 18996400), (2, 9498200), (4, 4749100), (5, 3799280), (8, 2374550), (10, 1899640), (16, 1187275), (20, 949820), (25, 759856), (40, 474910), (50, 379928), (80, 237455), (100, 189964), (200, 94982), (400, 47491)]