21491000

素因数分解:

$2^3\times 5^3\times {\mathrm{21491}}^1$

素因数の和:21512

約数の個数: 32

約数和(自身を含む): 50291280

約数和(自身を除く): 28800280

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 21491, 42982, 85964, 107455, 171928, 214910, 429820, 537275, 859640, 1074550, 2149100, 2686375, 4298200, 5372750, 10745500, 21491000]

約数ペア:

[(1, 21491000), (2, 10745500), (4, 5372750), (5, 4298200), (8, 2686375), (10, 2149100), (20, 1074550), (25, 859640), (40, 537275), (50, 429820), (100, 214910), (125, 171928), (200, 107455), (250, 85964), (500, 42982), (1000, 21491)]