28920021

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{2137}}^1$

素因数の和:2500

約数の個数: 16

約数和(自身を含む): 41665344

約数和(自身を除く): 12745323

約数列:

[1, 3, 13, 39, 347, 1041, 2137, 4511, 6411, 13533, 27781, 83343, 741539, 2224617, 9640007, 28920021]

約数ペア:

[(1, 28920021), (3, 9640007), (13, 2224617), (39, 741539), (347, 83343), (1041, 27781), (2137, 13533), (4511, 6411)]