78131440

素因数分解:

$2^4\times 5^1\times {\mathrm{976643}}^1$

素因数の和:976656

約数の個数: 20

約数和(自身を含む): 181655784

約数和(自身を除く): 103524344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 976643, 1953286, 3906572, 4883215, 7813144, 9766430, 15626288, 19532860, 39065720, 78131440]

約数ペア:

[(1, 78131440), (2, 39065720), (4, 19532860), (5, 15626288), (8, 9766430), (10, 7813144), (16, 4883215), (20, 3906572), (40, 1953286), (80, 976643)]