87964000

素因数分解:

$2^5\times 5^3\times {\mathrm{21991}}^1$

素因数の和:22016

約数の個数: 48

約数和(自身を含む): 216137376

約数和(自身を除く): 128173376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 21991, 43982, 87964, 109955, 175928, 219910, 351856, 439820, 549775, 703712, 879640, 1099550, 1759280, 2199100, 2748875, 3518560, 4398200, 5497750, 8796400, 10995500, 17592800, 21991000, 43982000, 87964000]

約数ペア:

[(1, 87964000), (2, 43982000), (4, 21991000), (5, 17592800), (8, 10995500), (10, 8796400), (16, 5497750), (20, 4398200), (25, 3518560), (32, 2748875), (40, 2199100), (50, 1759280), (80, 1099550), (100, 879640), (125, 703712), (160, 549775), (200, 439820), (250, 351856), (400, 219910), (500, 175928), (800, 109955), (1000, 87964), (2000, 43982), (4000, 21991)]