20745813

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{853}}^1$

素因数の和:945

約数の個数: 24

約数和(自身を含む): 30894304

約数和(自身を除く): 10148491

約数列:

[1, 3, 11, 33, 67, 121, 201, 363, 737, 853, 2211, 2559, 8107, 9383, 24321, 28149, 57151, 103213, 171453, 309639, 628661, 1885983, 6915271, 20745813]

約数ペア:

[(1, 20745813), (3, 6915271), (11, 1885983), (33, 628661), (67, 309639), (121, 171453), (201, 103213), (363, 57151), (737, 28149), (853, 24321), (2211, 9383), (2559, 8107)]