31361480

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{7193}}^1$

素因数の和:7313

約数の個数: 32

約数和(自身を含む): 71220600

約数和(自身を除く): 39859120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 7193, 14386, 28772, 35965, 57544, 71930, 143860, 287720, 784037, 1568074, 3136148, 3920185, 6272296, 7840370, 15680740, 31361480]

約数ペア:

[(1, 31361480), (2, 15680740), (4, 7840370), (5, 6272296), (8, 3920185), (10, 3136148), (20, 1568074), (40, 784037), (109, 287720), (218, 143860), (436, 71930), (545, 57544), (872, 35965), (1090, 28772), (2180, 14386), (4360, 7193)]