21882040

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2749}}^1$

素因数の和:2959

約数の個数: 32

約数和(自身を含む): 49500000

約数和(自身を除く): 27617960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 2749, 3980, 5498, 7960, 10996, 13745, 21992, 27490, 54980, 109960, 547051, 1094102, 2188204, 2735255, 4376408, 5470510, 10941020, 21882040]

約数ペア:

[(1, 21882040), (2, 10941020), (4, 5470510), (5, 4376408), (8, 2735255), (10, 2188204), (20, 1094102), (40, 547051), (199, 109960), (398, 54980), (796, 27490), (995, 21992), (1592, 13745), (1990, 10996), (2749, 7960), (3980, 5498)]