18780069

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{81299}}^1$

素因数の和:81320

約数の個数: 16

約数和(自身を含む): 31219200

約数和(自身を除く): 12439131

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 81299, 243897, 569093, 894289, 1707279, 2682867, 6260023, 18780069]

約数ペア:

[(1, 18780069), (3, 6260023), (7, 2682867), (11, 1707279), (21, 894289), (33, 569093), (77, 243897), (231, 81299)]