21279426

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{72379}}^1$

素因数の和:72398

約数の個数: 24

約数和(自身を含む): 49507920

約数和(自身を除く): 28228494

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294, 72379, 144758, 217137, 434274, 506653, 1013306, 1519959, 3039918, 3546571, 7093142, 10639713, 21279426]

約数ペア:

[(1, 21279426), (2, 10639713), (3, 7093142), (6, 3546571), (7, 3039918), (14, 1519959), (21, 1013306), (42, 506653), (49, 434274), (98, 217137), (147, 144758), (294, 72379)]