81268748

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{20753}}^1$

素因数の和:20857

約数の個数: 24

約数和(自身を含む): 156900240

約数和(自身を除く): 75631492

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 20753, 41506, 83012, 228283, 456566, 913132, 1847017, 3694034, 7388068, 20317187, 40634374, 81268748]

約数ペア:

[(1, 81268748), (2, 40634374), (4, 20317187), (11, 7388068), (22, 3694034), (44, 1847017), (89, 913132), (178, 456566), (356, 228283), (979, 83012), (1958, 41506), (3916, 20753)]