78425720

素因数分解:

$2^3\times 5^1\times {\mathrm{1960643}}^1$

素因数の和:1960654

約数の個数: 16

約数和(自身を含む): 176457960

約数和(自身を除く): 98032240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1960643, 3921286, 7842572, 9803215, 15685144, 19606430, 39212860, 78425720]

約数ペア:

[(1, 78425720), (2, 39212860), (4, 19606430), (5, 15685144), (8, 9803215), (10, 7842572), (20, 3921286), (40, 1960643)]