21212724

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{135979}}^1$

素因数の和:135999

約数の個数: 24

約数和(自身を含む): 53304160

約数和(自身を除く): 32091436

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 135979, 271958, 407937, 543916, 815874, 1631748, 1767727, 3535454, 5303181, 7070908, 10606362, 21212724]

約数ペア:

[(1, 21212724), (2, 10606362), (3, 7070908), (4, 5303181), (6, 3535454), (12, 1767727), (13, 1631748), (26, 815874), (39, 543916), (52, 407937), (78, 271958), (156, 135979)]