78608980

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{19751}}^1$

素因数の和:19959

約数の個数: 24

約数和(自身を含む): 165916800

約数和(自身を除く): 87307820

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 19751, 39502, 79004, 98755, 197510, 395020, 3930449, 7860898, 15721796, 19652245, 39304490, 78608980]

約数ペア:

[(1, 78608980), (2, 39304490), (4, 19652245), (5, 15721796), (10, 7860898), (20, 3930449), (199, 395020), (398, 197510), (796, 98755), (995, 79004), (1990, 39502), (3980, 19751)]