20857269

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{277}}^1\times {\mathrm{1321}}^1$

素因数の和:1620

約数の個数: 16

約数和(自身を含む): 29401280

約数和(自身を除く): 8544011

約数列:

[1, 3, 19, 57, 277, 831, 1321, 3963, 5263, 15789, 25099, 75297, 365917, 1097751, 6952423, 20857269]

約数ペア:

[(1, 20857269), (3, 6952423), (19, 1097751), (57, 365917), (277, 75297), (831, 25099), (1321, 15789), (3963, 5263)]