21208421

素因数分解:

${\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{337}}^1$

素因数の和:500

約数の個数: 16

約数和(自身を含む): 23622144

約数和(自身を除く): 2413723

約数列:

[1, 13, 47, 103, 337, 611, 1339, 4381, 4841, 15839, 34711, 62933, 205907, 451243, 1631417, 21208421]

約数ペア:

[(1, 21208421), (13, 1631417), (47, 451243), (103, 205907), (337, 62933), (611, 34711), (1339, 15839), (4381, 4841)]