19870150

素因数分解:

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

素因数の和:2208

約数の個数: 24

約数和(自身を含む): 37162800

約数和(自身を除く): 17292650

約数列:

[1, 2, 5, 10, 25, 50, 199, 398, 995, 1990, 1997, 3994, 4975, 9950, 9985, 19970, 49925, 99850, 397403, 794806, 1987015, 3974030, 9935075, 19870150]

約数ペア:

[(1, 19870150), (2, 9935075), (5, 3974030), (10, 1987015), (25, 794806), (50, 397403), (199, 99850), (398, 49925), (995, 19970), (1990, 9985), (1997, 9950), (3994, 4975)]