20991666

素因数分解:

$2^1\times 3^1\times {\mathrm{367}}^1\times {\mathrm{9533}}^1$

素因数の和:9905

約数の個数: 16

約数和(自身を含む): 42102144

約数和(自身を除く): 21110478

約数列:

[1, 2, 3, 6, 367, 734, 1101, 2202, 9533, 19066, 28599, 57198, 3498611, 6997222, 10495833, 20991666]

約数ペア:

[(1, 20991666), (2, 10495833), (3, 6997222), (6, 3498611), (367, 57198), (734, 28599), (1101, 19066), (2202, 9533)]