21761887

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7951}}^1$

素因数の和:7998

約数の個数: 16

約数和(自身を含む): 27482112

約数和(自身を除く): 5720225

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 7951, 55657, 135167, 182873, 946169, 1280111, 3108841, 21761887]

約数ペア:

[(1, 21761887), (7, 3108841), (17, 1280111), (23, 946169), (119, 182873), (161, 135167), (391, 55657), (2737, 7951)]