20523657

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 35392896

約数和(自身を除く): 14869239

約数列:

[1, 3, 7, 11, 21, 33, 41, 77, 121, 123, 197, 231, 287, 363, 451, 591, 847, 861, 1353, 1379, 2167, 2541, 3157, 4137, 4961, 6501, 8077, 9471, 14883, 15169, 23837, 24231, 34727, 45507, 56539, 71511, 88847, 104181, 166859, 169617, 266541, 500577, 621929, 977317, 1865787, 2931951, 6841219, 20523657]

約数ペア:

[(1, 20523657), (3, 6841219), (7, 2931951), (11, 1865787), (21, 977317), (33, 621929), (41, 500577), (77, 266541), (121, 169617), (123, 166859), (197, 104181), (231, 88847), (287, 71511), (363, 56539), (451, 45507), (591, 34727), (847, 24231), (861, 23837), (1353, 15169), (1379, 14883), (2167, 9471), (2541, 8077), (3157, 6501), (4137, 4961)]