21159806

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{8311}}^1$

素因数の和:8399

約数の個数: 16

約数和(自身を含む): 33912960

約数和(自身を除く): 12753154

約数列:

[1, 2, 19, 38, 67, 134, 1273, 2546, 8311, 16622, 157909, 315818, 556837, 1113674, 10579903, 21159806]

約数ペア:

[(1, 21159806), (2, 10579903), (19, 1113674), (38, 556837), (67, 315818), (134, 157909), (1273, 16622), (2546, 8311)]