18645837

素因数分解:

$3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{6481}}^1$

素因数の和:6628

約数の個数: 16

約数和(自身を含む): 28624512

約数和(自身を除く): 9978675

約数列:

[1, 3, 7, 21, 137, 411, 959, 2877, 6481, 19443, 45367, 136101, 887897, 2663691, 6215279, 18645837]

約数ペア:

[(1, 18645837), (3, 6215279), (7, 2663691), (21, 887897), (137, 136101), (411, 45367), (959, 19443), (2877, 6481)]