20767240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39937}}^1$

素因数の和:39961

約数の個数: 32

約数和(自身を含む): 50321880

約数和(自身を除く): 29554640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39937, 79874, 159748, 199685, 319496, 399370, 519181, 798740, 1038362, 1597480, 2076724, 2595905, 4153448, 5191810, 10383620, 20767240]

約数ペア:

[(1, 20767240), (2, 10383620), (4, 5191810), (5, 4153448), (8, 2595905), (10, 2076724), (13, 1597480), (20, 1038362), (26, 798740), (40, 519181), (52, 399370), (65, 319496), (104, 199685), (130, 159748), (260, 79874), (520, 39937)]