20121557799

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{56362907}}^1$

素因数の和:56362934

約数の個数: 16

約数和(自身を含む): 32465035008

約数和(自身を除く): 12343477209

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 56362907, 169088721, 394540349, 958169419, 1183621047, 2874508257, 6707185933, 20121557799]

約数ペア:

[(1, 20121557799), (3, 6707185933), (7, 2874508257), (17, 1183621047), (21, 958169419), (51, 394540349), (119, 169088721), (357, 56362907)]