66777820

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{7537}}^1$

素因数の和:7989

約数の個数: 24

約数和(自身を含む): 140568624

約数和(自身を除く): 73790804

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 4430, 7537, 8860, 15074, 30148, 37685, 75370, 150740, 3338891, 6677782, 13355564, 16694455, 33388910, 66777820]

約数ペア:

[(1, 66777820), (2, 33388910), (4, 16694455), (5, 13355564), (10, 6677782), (20, 3338891), (443, 150740), (886, 75370), (1772, 37685), (2215, 30148), (4430, 15074), (7537, 8860)]