15896120

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1997}}^1$

素因数の和:2207

約数の個数: 32

約数和(自身を含む): 35964000

約数和(自身を除く): 20067880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 1997, 3980, 3994, 7960, 7988, 9985, 15976, 19970, 39940, 79880, 397403, 794806, 1589612, 1987015, 3179224, 3974030, 7948060, 15896120]

約数ペア:

[(1, 15896120), (2, 7948060), (4, 3974030), (5, 3179224), (8, 1987015), (10, 1589612), (20, 794806), (40, 397403), (199, 79880), (398, 39940), (796, 19970), (995, 15976), (1592, 9985), (1990, 7988), (1997, 7960), (3980, 3994)]