21878877

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{3719}}^1$

素因数の和:3812

約数の個数: 16

約数和(自身を含む): 30533760

約数和(自身を除く): 8654883

約数列:

[1, 3, 37, 53, 111, 159, 1961, 3719, 5883, 11157, 137603, 197107, 412809, 591321, 7292959, 21878877]

約数ペア:

[(1, 21878877), (3, 7292959), (37, 591321), (53, 412809), (111, 197107), (159, 137603), (1961, 11157), (3719, 5883)]