78890120

素因数分解:

$2^3\times 5^1\times {\mathrm{1321}}^1\times {\mathrm{1493}}^1$

素因数の和:2825

約数の個数: 32

約数和(自身を含む): 177756120

約数和(自身を除く): 98866000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1321, 1493, 2642, 2986, 5284, 5972, 6605, 7465, 10568, 11944, 13210, 14930, 26420, 29860, 52840, 59720, 1972253, 3944506, 7889012, 9861265, 15778024, 19722530, 39445060, 78890120]

約数ペア:

[(1, 78890120), (2, 39445060), (4, 19722530), (5, 15778024), (8, 9861265), (10, 7889012), (20, 3944506), (40, 1972253), (1321, 59720), (1493, 52840), (2642, 29860), (2986, 26420), (5284, 14930), (5972, 13210), (6605, 11944), (7465, 10568)]