20671863

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 29855232

約数和(自身を除く): 9183369

約数列:

[1, 3, 37, 43, 61, 71, 111, 129, 183, 213, 1591, 2257, 2623, 2627, 3053, 4331, 4773, 6771, 7869, 7881, 9159, 12993, 97051, 112961, 160247, 186233, 291153, 338883, 480741, 558699, 6890621, 20671863]

約数ペア:

[(1, 20671863), (3, 6890621), (37, 558699), (43, 480741), (61, 338883), (71, 291153), (111, 186233), (129, 160247), (183, 112961), (213, 97051), (1591, 12993), (2257, 9159), (2623, 7881), (2627, 7869), (3053, 6771), (4331, 4773)]