128262421

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{191}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 158957568

約数和(自身を除く): 30695147

約数列:

[1, 7, 23, 43, 97, 161, 191, 301, 679, 989, 1337, 2231, 4171, 4393, 6923, 8213, 15617, 18527, 29197, 30751, 57491, 95933, 129689, 188899, 426121, 671531, 796661, 1322293, 2982847, 5576627, 18323203, 128262421]

約数ペア:

[(1, 128262421), (7, 18323203), (23, 5576627), (43, 2982847), (97, 1322293), (161, 796661), (191, 671531), (301, 426121), (679, 188899), (989, 129689), (1337, 95933), (2231, 57491), (4171, 30751), (4393, 29197), (6923, 18527), (8213, 15617)]