639222477

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{81233}}^1$

素因数の和:81340

約数の個数: 16

約数和(自身を含む): 886425408

約数和(自身を除く): 247202931

約数列:

[1, 3, 43, 61, 129, 183, 2623, 7869, 81233, 243699, 3493019, 4955213, 10479057, 14865639, 213074159, 639222477]

約数ペア:

[(1, 639222477), (3, 213074159), (43, 14865639), (61, 10479057), (129, 4955213), (183, 3493019), (2623, 243699), (7869, 81233)]