18668377

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{757}}^1$

素因数の和:1048

約数の個数: 16

約数和(自身を含む): 23091712

約数和(自身を除く): 4423335

約数列:

[1, 7, 13, 91, 271, 757, 1897, 3523, 5299, 9841, 24661, 68887, 205147, 1436029, 2666911, 18668377]

約数ペア:

[(1, 18668377), (7, 2666911), (13, 1436029), (91, 205147), (271, 68887), (757, 24661), (1897, 9841), (3523, 5299)]