19801666

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{5449}}^1$

素因数の和:5553

約数の個数: 16

約数和(自身を含む): 31392000

約数和(自身を除く): 11590334

約数列:

[1, 2, 23, 46, 79, 158, 1817, 3634, 5449, 10898, 125327, 250654, 430471, 860942, 9900833, 19801666]

約数ペア:

[(1, 19801666), (2, 9900833), (23, 860942), (46, 430471), (79, 250654), (158, 125327), (1817, 10898), (3634, 5449)]