3972040

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{499}}^1$

素因数の和:709

約数の個数: 32

約数和(自身を含む): 9000000

約数和(自身を除く): 5027960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 499, 796, 995, 998, 1592, 1990, 1996, 2495, 3980, 3992, 4990, 7960, 9980, 19960, 99301, 198602, 397204, 496505, 794408, 993010, 1986020, 3972040]

約数ペア:

[(1, 3972040), (2, 1986020), (4, 993010), (5, 794408), (8, 496505), (10, 397204), (20, 198602), (40, 99301), (199, 19960), (398, 9980), (499, 7960), (796, 4990), (995, 3992), (998, 3980), (1592, 2495), (1990, 1996)]