1291000

素因数分解:

$2^3\times 5^3\times {\mathrm{1291}}^1$

素因数の和:1312

約数の個数: 32

約数和(自身を含む): 3023280

約数和(自身を除く): 1732280

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 1291, 2582, 5164, 6455, 10328, 12910, 25820, 32275, 51640, 64550, 129100, 161375, 258200, 322750, 645500, 1291000]

約数ペア:

[(1, 1291000), (2, 645500), (4, 322750), (5, 258200), (8, 161375), (10, 129100), (20, 64550), (25, 51640), (40, 32275), (50, 25820), (100, 12910), (125, 10328), (200, 6455), (250, 5164), (500, 2582), (1000, 1291)]