21279349

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1187}}^1$

素因数の和:1404

約数の個数: 16

約数和(自身を含む): 26345088

約数和(自身を除く): 5065739

約数列:

[1, 7, 13, 91, 197, 1187, 1379, 2561, 8309, 15431, 17927, 108017, 233839, 1636873, 3039907, 21279349]

約数ペア:

[(1, 21279349), (7, 3039907), (13, 1636873), (91, 233839), (197, 108017), (1187, 17927), (1379, 15431), (2561, 8309)]