21066728

素因数分解:

$2^3\times {\mathrm{83}}^1\times {\mathrm{31727}}^1$

素因数の和:31816

約数の個数: 16

約数和(自身を含む): 39977280

約数和(自身を除く): 18910552

約数列:

[1, 2, 4, 8, 83, 166, 332, 664, 31727, 63454, 126908, 253816, 2633341, 5266682, 10533364, 21066728]

約数ペア:

[(1, 21066728), (2, 10533364), (4, 5266682), (8, 2633341), (83, 253816), (166, 126908), (332, 63454), (664, 31727)]