28301721

素因数分解:

$3^1\times 7^1\times {\mathrm{647}}^1\times {\mathrm{2083}}^1$

素因数の和:2740

約数の個数: 16

約数和(自身を含む): 43213824

約数和(自身を除く): 14912103

約数列:

[1, 3, 7, 21, 647, 1941, 2083, 4529, 6249, 13587, 14581, 43743, 1347701, 4043103, 9433907, 28301721]

約数ペア:

[(1, 28301721), (3, 9433907), (7, 4043103), (21, 1347701), (647, 43743), (1941, 14581), (2083, 13587), (4529, 6249)]