19770650

素因数分解:

$2^1\times 5^2\times {\mathrm{199}}^1\times {\mathrm{1987}}^1$

素因数の和:2198

約数の個数: 24

約数和(自身を含む): 36976800

約数和(自身を除く): 17206150

約数列:

[1, 2, 5, 10, 25, 50, 199, 398, 995, 1987, 1990, 3974, 4975, 9935, 9950, 19870, 49675, 99350, 395413, 790826, 1977065, 3954130, 9885325, 19770650]

約数ペア:

[(1, 19770650), (2, 9885325), (5, 3954130), (10, 1977065), (25, 790826), (50, 395413), (199, 99350), (398, 49675), (995, 19870), (1987, 9950), (1990, 9935), (3974, 4975)]