20404727

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:172

約数の個数: 32

約数和(自身を含む): 26112000

約数和(自身を除く): 5707273

約数列:

[1, 7, 19, 31, 49, 101, 133, 217, 343, 589, 707, 931, 1519, 1919, 3131, 4123, 4949, 6517, 10633, 13433, 21917, 28861, 34643, 59489, 94031, 153419, 202027, 416423, 658217, 1073933, 2914961, 20404727]

約数ペア:

[(1, 20404727), (7, 2914961), (19, 1073933), (31, 658217), (49, 416423), (101, 202027), (133, 153419), (217, 94031), (343, 59489), (589, 34643), (707, 28861), (931, 21917), (1519, 13433), (1919, 10633), (3131, 6517), (4123, 4949)]