21390738

素因数分解:

$2^1\times 3^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{337}}^1$

素因数の和:562

約数の個数: 32

約数和(自身を含む): 43804800

約数和(自身を除く): 22414062

約数列:

[1, 2, 3, 6, 71, 142, 149, 213, 298, 337, 426, 447, 674, 894, 1011, 2022, 10579, 21158, 23927, 31737, 47854, 50213, 63474, 71781, 100426, 143562, 150639, 301278, 3565123, 7130246, 10695369, 21390738]

約数ペア:

[(1, 21390738), (2, 10695369), (3, 7130246), (6, 3565123), (71, 301278), (142, 150639), (149, 143562), (213, 100426), (298, 71781), (337, 63474), (426, 50213), (447, 47854), (674, 31737), (894, 23927), (1011, 21158), (2022, 10579)]