21703297

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{541}}^1$

素因数の和:1080

約数の個数: 16

約数和(自身を含む): 27160704

約数和(自身を除く): 5457407

約数列:

[1, 7, 11, 77, 521, 541, 3647, 3787, 5731, 5951, 40117, 41657, 281861, 1973027, 3100471, 21703297]

約数ペア:

[(1, 21703297), (7, 3100471), (11, 1973027), (77, 281861), (521, 41657), (541, 40117), (3647, 5951), (3787, 5731)]