21680743

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{311}}^1\times {\mathrm{433}}^1$

素因数の和:774

約数の個数: 16

約数和(自身を含む): 25998336

約数和(自身を除く): 4317593

約数列:

[1, 7, 23, 161, 311, 433, 2177, 3031, 7153, 9959, 50071, 69713, 134663, 942641, 3097249, 21680743]

約数ペア:

[(1, 21680743), (7, 3097249), (23, 942641), (161, 134663), (311, 69713), (433, 50071), (2177, 9959), (3031, 7153)]