31543640

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{4003}}^1$

素因数の和:4211

約数の個数: 32

約数和(自身を含む): 71351280

約数和(自身を除く): 39807640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 4003, 7880, 8006, 16012, 20015, 32024, 40030, 80060, 160120, 788591, 1577182, 3154364, 3942955, 6308728, 7885910, 15771820, 31543640]

約数ペア:

[(1, 31543640), (2, 15771820), (4, 7885910), (5, 6308728), (8, 3942955), (10, 3154364), (20, 1577182), (40, 788591), (197, 160120), (394, 80060), (788, 40030), (985, 32024), (1576, 20015), (1970, 16012), (3940, 8006), (4003, 7880)]