21887218

素因数分解:

$2^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{601}}^1$

素因数の和:873

約数の個数: 16

約数和(自身を含む): 33374880

約数和(自身を除く): 11487662

約数列:

[1, 2, 131, 139, 262, 278, 601, 1202, 18209, 36418, 78731, 83539, 157462, 167078, 10943609, 21887218]

約数ペア:

[(1, 21887218), (2, 10943609), (131, 167078), (139, 157462), (262, 83539), (278, 78731), (601, 36418), (1202, 18209)]