18145820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{11783}}^1$

素因数の和:11810

約数の個数: 48

約数和(自身を含む): 47513088

約数和(自身を除く): 29367268

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 11783, 23566, 47132, 58915, 82481, 117830, 129613, 164962, 235660, 259226, 329924, 412405, 518452, 648065, 824810, 907291, 1296130, 1649620, 1814582, 2592260, 3629164, 4536455, 9072910, 18145820]

約数ペア:

[(1, 18145820), (2, 9072910), (4, 4536455), (5, 3629164), (7, 2592260), (10, 1814582), (11, 1649620), (14, 1296130), (20, 907291), (22, 824810), (28, 648065), (35, 518452), (44, 412405), (55, 329924), (70, 259226), (77, 235660), (110, 164962), (140, 129613), (154, 117830), (220, 82481), (308, 58915), (385, 47132), (770, 23566), (1540, 11783)]