21379894

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1\times {\mathrm{823}}^1$

素因数の和:1275

約数の個数: 16

約数和(自身を含む): 33223680

約数和(自身を除く): 11843786

約数列:

[1, 2, 31, 62, 419, 823, 838, 1646, 12989, 25513, 25978, 51026, 344837, 689674, 10689947, 21379894]

約数ペア:

[(1, 21379894), (2, 10689947), (31, 689674), (62, 344837), (419, 51026), (823, 25978), (838, 25513), (1646, 12989)]