20431888

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9187}}^1$

素因数の和:9334

約数の個数: 20

約数和(自身を含む): 39875920

約数和(自身を除く): 19444032

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9187, 18374, 36748, 73496, 146992, 1276993, 2553986, 5107972, 10215944, 20431888]

約数ペア:

[(1, 20431888), (2, 10215944), (4, 5107972), (8, 2553986), (16, 1276993), (139, 146992), (278, 73496), (556, 36748), (1112, 18374), (2224, 9187)]