21043438

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{15271}}^1$

素因数の和:15339

約数の個数: 16

約数和(自身を含む): 34636896

約数和(自身を除く): 13593458

約数列:

[1, 2, 13, 26, 53, 106, 689, 1378, 15271, 30542, 198523, 397046, 809363, 1618726, 10521719, 21043438]

約数ペア:

[(1, 21043438), (2, 10521719), (13, 1618726), (26, 809363), (53, 397046), (106, 198523), (689, 30542), (1378, 15271)]