128357523

素因数分解:

$3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{11777}}^1$

素因数の和:11963

約数の個数: 24

約数和(自身を含む): 213134688

約数和(自身を除く): 84777165

約数列:

[1, 3, 7, 9, 21, 63, 173, 519, 1211, 1557, 3633, 10899, 11777, 35331, 82439, 105993, 247317, 741951, 2037421, 6112263, 14261947, 18336789, 42785841, 128357523]

約数ペア:

[(1, 128357523), (3, 42785841), (7, 18336789), (9, 14261947), (21, 6112263), (63, 2037421), (173, 741951), (519, 247317), (1211, 105993), (1557, 82439), (3633, 35331), (10899, 11777)]