21081170054

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79252519}}^1$

素因数の和:79252547

約数の個数: 16

約数和(自身を含む): 38041209600

約数和(自身を除く): 16960039546

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 79252519, 158505038, 554767633, 1109535266, 1505797861, 3011595722, 10540585027, 21081170054]

約数ペア:

[(1, 21081170054), (2, 10540585027), (7, 3011595722), (14, 1505797861), (19, 1109535266), (38, 554767633), (133, 158505038), (266, 79252519)]