20878990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{347}}^1\times {\mathrm{547}}^1$

素因数の和:912

約数の個数: 32

約数和(自身を含む): 41192064

約数和(自身を除く): 20313074

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 347, 547, 694, 1094, 1735, 2735, 3470, 3817, 5470, 6017, 7634, 12034, 19085, 30085, 38170, 60170, 189809, 379618, 949045, 1898090, 2087899, 4175798, 10439495, 20878990]

約数ペア:

[(1, 20878990), (2, 10439495), (5, 4175798), (10, 2087899), (11, 1898090), (22, 949045), (55, 379618), (110, 189809), (347, 60170), (547, 38170), (694, 30085), (1094, 19085), (1735, 12034), (2735, 7634), (3470, 6017), (3817, 5470)]