21278412

素因数分解:

$2^2\times 3^2\times {\mathrm{591067}}^1$

素因数の和:591077

約数の個数: 18

約数和(自身を含む): 53787188

約数和(自身を除く): 32508776

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 591067, 1182134, 1773201, 2364268, 3546402, 5319603, 7092804, 10639206, 21278412]

約数ペア:

[(1, 21278412), (2, 10639206), (3, 7092804), (4, 5319603), (6, 3546402), (9, 2364268), (12, 1773201), (18, 1182134), (36, 591067)]