21061958

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{5569}}^1$

素因数の和:5663

約数の個数: 16

約数和(自身を含む): 33152640

約数和(自身を除く): 12090682

約数列:

[1, 2, 31, 61, 62, 122, 1891, 3782, 5569, 11138, 172639, 339709, 345278, 679418, 10530979, 21061958]

約数ペア:

[(1, 21061958), (2, 10530979), (31, 679418), (61, 345278), (62, 339709), (122, 172639), (1891, 11138), (3782, 5569)]