21890643

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^2$

素因数の和:215

約数の個数: 24

約数和(自身を含む): 31050864

約数和(自身を除く): 9160221

約数列:

[1, 3, 37, 53, 61, 111, 159, 183, 1961, 2257, 3233, 3721, 5883, 6771, 9699, 11163, 119621, 137677, 197213, 358863, 413031, 591639, 7296881, 21890643]

約数ペア:

[(1, 21890643), (3, 7296881), (37, 591639), (53, 413031), (61, 358863), (111, 197213), (159, 137677), (183, 119621), (1961, 11163), (2257, 9699), (3233, 6771), (3721, 5883)]