78879440

素因数分解:

$2^4\times 5^1\times {\mathrm{985993}}^1$

素因数の和:986006

約数の個数: 20

約数和(自身を含む): 183394884

約数和(自身を除く): 104515444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 985993, 1971986, 3943972, 4929965, 7887944, 9859930, 15775888, 19719860, 39439720, 78879440]

約数ペア:

[(1, 78879440), (2, 39439720), (4, 19719860), (5, 15775888), (8, 9859930), (10, 7887944), (16, 4929965), (20, 3943972), (40, 1971986), (80, 985993)]