17718021

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{5087}}^1$

素因数の和:5142

約数の個数: 20

約数和(自身を含む): 27088512

約数和(自身を除く): 9370491

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 5087, 15261, 45783, 137349, 218741, 412047, 656223, 1968669, 5906007, 17718021]

約数ペア:

[(1, 17718021), (3, 5906007), (9, 1968669), (27, 656223), (43, 412047), (81, 218741), (129, 137349), (387, 45783), (1161, 15261), (3483, 5087)]