1990840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{701}}^1$

素因数の和:783

約数の個数: 32

約数和(自身を含む): 4548960

約数和(自身を除く): 2558120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 701, 710, 1402, 1420, 2804, 2840, 3505, 5608, 7010, 14020, 28040, 49771, 99542, 199084, 248855, 398168, 497710, 995420, 1990840]

約数ペア:

[(1, 1990840), (2, 995420), (4, 497710), (5, 398168), (8, 248855), (10, 199084), (20, 99542), (40, 49771), (71, 28040), (142, 14020), (284, 7010), (355, 5608), (568, 3505), (701, 2840), (710, 2804), (1402, 1420)]