21711238

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{239}}^1\times {\mathrm{857}}^1$

素因数の和:1151

約数の個数: 16

約数和(自身を含む): 33359040

約数和(自身を除く): 11647802

約数列:

[1, 2, 53, 106, 239, 478, 857, 1714, 12667, 25334, 45421, 90842, 204823, 409646, 10855619, 21711238]

約数ペア:

[(1, 21711238), (2, 10855619), (53, 409646), (106, 204823), (239, 90842), (478, 45421), (857, 25334), (1714, 12667)]