20767840

素因数分解:

$2^5\times 5^1\times {\mathrm{293}}^1\times {\mathrm{443}}^1$

素因数の和:751

約数の個数: 48

約数和(自身を含む): 49342608

約数和(自身を除く): 28574768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 293, 443, 586, 886, 1172, 1465, 1772, 2215, 2344, 2930, 3544, 4430, 4688, 5860, 7088, 8860, 9376, 11720, 14176, 17720, 23440, 35440, 46880, 70880, 129799, 259598, 519196, 648995, 1038392, 1297990, 2076784, 2595980, 4153568, 5191960, 10383920, 20767840]

約数ペア:

[(1, 20767840), (2, 10383920), (4, 5191960), (5, 4153568), (8, 2595980), (10, 2076784), (16, 1297990), (20, 1038392), (32, 648995), (40, 519196), (80, 259598), (160, 129799), (293, 70880), (443, 46880), (586, 35440), (886, 23440), (1172, 17720), (1465, 14176), (1772, 11720), (2215, 9376), (2344, 8860), (2930, 7088), (3544, 5860), (4430, 4688)]