21155113

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{733}}^1$

素因数の和:797

約数の個数: 24

約数和(自身を含む): 26776320

約数和(自身を除く): 5621207

約数列:

[1, 7, 19, 31, 49, 133, 217, 589, 733, 931, 1519, 4123, 5131, 13927, 22723, 28861, 35917, 97489, 159061, 431737, 682423, 1113427, 3022159, 21155113]

約数ペア:

[(1, 21155113), (7, 3022159), (19, 1113427), (31, 682423), (49, 431737), (133, 159061), (217, 97489), (589, 35917), (733, 28861), (931, 22723), (1519, 13927), (4123, 5131)]