21375952

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102769}}^1$

素因数の和:102790

約数の個数: 20

約数和(自身を含む): 44602180

約数和(自身を除く): 23226228

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102769, 205538, 411076, 822152, 1335997, 1644304, 2671994, 5343988, 10687976, 21375952]

約数ペア:

[(1, 21375952), (2, 10687976), (4, 5343988), (8, 2671994), (13, 1644304), (16, 1335997), (26, 822152), (52, 411076), (104, 205538), (208, 102769)]