20305497

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{61}}^2\times {\mathrm{107}}^1$

素因数の和:249

約数の個数: 24

約数和(自身を含む): 29416608

約数和(自身を除く): 9111111

約数列:

[1, 3, 17, 51, 61, 107, 183, 321, 1037, 1819, 3111, 3721, 5457, 6527, 11163, 19581, 63257, 110959, 189771, 332877, 398147, 1194441, 6768499, 20305497]

約数ペア:

[(1, 20305497), (3, 6768499), (17, 1194441), (51, 398147), (61, 332877), (107, 189771), (183, 110959), (321, 63257), (1037, 19581), (1819, 11163), (3111, 6527), (3721, 5457)]