8796400

素因数分解:

$2^4\times 5^2\times {\mathrm{21991}}^1$

素因数の和:22009

約数の個数: 30

約数和(自身を含む): 21134312

約数和(自身を除く): 12337912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 21991, 43982, 87964, 109955, 175928, 219910, 351856, 439820, 549775, 879640, 1099550, 1759280, 2199100, 4398200, 8796400]

約数ペア:

[(1, 8796400), (2, 4398200), (4, 2199100), (5, 1759280), (8, 1099550), (10, 879640), (16, 549775), (20, 439820), (25, 351856), (40, 219910), (50, 175928), (80, 109955), (100, 87964), (200, 43982), (400, 21991)]