19903418

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{5477}}^1$

素因数の和:5581

約数の個数: 16

約数和(自身を含む): 31553280

約数和(自身を除く): 11649862

約数列:

[1, 2, 23, 46, 79, 158, 1817, 3634, 5477, 10954, 125971, 251942, 432683, 865366, 9951709, 19903418]

約数ペア:

[(1, 19903418), (2, 9951709), (23, 865366), (46, 432683), (79, 251942), (158, 125971), (1817, 10954), (3634, 5477)]