18780121

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1117}}^1$

素因数の和:1200

約数の個数: 16

約数和(自身を含む): 21250944

約数和(自身を除く): 2470823

約数列:

[1, 17, 23, 43, 391, 731, 989, 1117, 16813, 18989, 25691, 48031, 436747, 816527, 1104713, 18780121]

約数ペア:

[(1, 18780121), (17, 1104713), (23, 816527), (43, 436747), (391, 48031), (731, 25691), (989, 18989), (1117, 16813)]