208049919

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{900649}}^1$

素因数の和:900670

約数の個数: 16

約数和(自身を含む): 345849600

約数和(自身を除く): 137799681

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 900649, 2701947, 6304543, 9907139, 18913629, 29721417, 69349973, 208049919]

約数ペア:

[(1, 208049919), (3, 69349973), (7, 29721417), (11, 18913629), (21, 9907139), (33, 6304543), (77, 2701947), (231, 900649)]