21954164

素因数分解:

$2^2\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{743}}^1$

素因数の和:919

約数の個数: 24

約数和(自身を含む): 39372480

約数和(自身を除く): 17418316

約数列:

[1, 2, 4, 83, 89, 166, 178, 332, 356, 743, 1486, 2972, 7387, 14774, 29548, 61669, 66127, 123338, 132254, 246676, 264508, 5488541, 10977082, 21954164]

約数ペア:

[(1, 21954164), (2, 10977082), (4, 5488541), (83, 264508), (89, 246676), (166, 132254), (178, 123338), (332, 66127), (356, 61669), (743, 29548), (1486, 14774), (2972, 7387)]