7924120

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{499}}^1$

素因数の和:907

約数の個数: 32

約数和(自身を含む): 17910000

約数和(自身を除く): 9985880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 499, 794, 998, 1588, 1985, 1996, 2495, 3176, 3970, 3992, 4990, 7940, 9980, 15880, 19960, 198103, 396206, 792412, 990515, 1584824, 1981030, 3962060, 7924120]

約数ペア:

[(1, 7924120), (2, 3962060), (4, 1981030), (5, 1584824), (8, 990515), (10, 792412), (20, 396206), (40, 198103), (397, 19960), (499, 15880), (794, 9980), (998, 7940), (1588, 4990), (1985, 3992), (1996, 3970), (2495, 3176)]