20746726

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:317

約数の個数: 64

約数和(自身を含む): 42932736

約数和(自身を除く): 22186010

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 43, 77, 86, 91, 143, 154, 182, 241, 286, 301, 473, 482, 559, 602, 946, 1001, 1118, 1687, 2002, 2651, 3133, 3311, 3374, 3913, 5302, 6149, 6266, 6622, 7826, 10363, 12298, 18557, 20726, 21931, 34463, 37114, 43043, 43862, 68926, 72541, 86086, 113993, 134719, 145082, 227986, 241241, 269438, 482482, 797951, 943033, 1481909, 1595902, 1886066, 2963818, 10373363, 20746726]

約数ペア:

[(1, 20746726), (2, 10373363), (7, 2963818), (11, 1886066), (13, 1595902), (14, 1481909), (22, 943033), (26, 797951), (43, 482482), (77, 269438), (86, 241241), (91, 227986), (143, 145082), (154, 134719), (182, 113993), (241, 86086), (286, 72541), (301, 68926), (473, 43862), (482, 43043), (559, 37114), (602, 34463), (946, 21931), (1001, 20726), (1118, 18557), (1687, 12298), (2002, 10363), (2651, 7826), (3133, 6622), (3311, 6266), (3374, 6149), (3913, 5302)]