20902469

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1091}}^1$

素因数の和:1145

約数の個数: 24

約数和(自身を含む): 26889408

約数和(自身を除く): 5986939

約数列:

[1, 7, 17, 23, 49, 119, 161, 391, 833, 1091, 1127, 2737, 7637, 18547, 19159, 25093, 53459, 129829, 175651, 426581, 908803, 1229557, 2986067, 20902469]

約数ペア:

[(1, 20902469), (7, 2986067), (17, 1229557), (23, 908803), (49, 426581), (119, 175651), (161, 129829), (391, 53459), (833, 25093), (1091, 19159), (1127, 18547), (2737, 7637)]