18968680

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2383}}^1$

素因数の和:2593

約数の個数: 32

約数和(自身を含む): 42912000

約数和(自身を除く): 23943320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 2383, 3980, 4766, 7960, 9532, 11915, 19064, 23830, 47660, 95320, 474217, 948434, 1896868, 2371085, 3793736, 4742170, 9484340, 18968680]

約数ペア:

[(1, 18968680), (2, 9484340), (4, 4742170), (5, 3793736), (8, 2371085), (10, 1896868), (20, 948434), (40, 474217), (199, 95320), (398, 47660), (796, 23830), (995, 19064), (1592, 11915), (1990, 9532), (2383, 7960), (3980, 4766)]