16720569

素因数分解:

$3^2\times {\mathrm{97}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:389

約数の個数: 24

約数和(自身を含む): 24766560

約数和(自身を除く): 8045991

約数列:

[1, 3, 9, 97, 107, 179, 291, 321, 537, 873, 963, 1611, 10379, 17363, 19153, 31137, 52089, 57459, 93411, 156267, 172377, 1857841, 5573523, 16720569]

約数ペア:

[(1, 16720569), (3, 5573523), (9, 1857841), (97, 172377), (107, 156267), (179, 93411), (291, 57459), (321, 52089), (537, 31137), (873, 19153), (963, 17363), (1611, 10379)]