20815438

素因数分解:

$2^1\times 7^1\times {\mathrm{379}}^1\times {\mathrm{3923}}^1$

素因数の和:4311

約数の個数: 16

約数和(自身を含む): 35786880

約数和(自身を除く): 14971442

約数列:

[1, 2, 7, 14, 379, 758, 2653, 3923, 5306, 7846, 27461, 54922, 1486817, 2973634, 10407719, 20815438]

約数ペア:

[(1, 20815438), (2, 10407719), (7, 2973634), (14, 1486817), (379, 54922), (758, 27461), (2653, 7846), (3923, 5306)]