20881242

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{16339}}^1$

素因数の和:16418

約数の個数: 24

約数和(自身を含む): 45882720

約数和(自身を除く): 25001478

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 16339, 32678, 49017, 98034, 147051, 294102, 1160069, 2320138, 3480207, 6960414, 10440621, 20881242]

約数ペア:

[(1, 20881242), (2, 10440621), (3, 6960414), (6, 3480207), (9, 2320138), (18, 1160069), (71, 294102), (142, 147051), (213, 98034), (426, 49017), (639, 32678), (1278, 16339)]