20841243

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 9640677

約数列:

[1, 3, 23, 41, 53, 69, 123, 139, 159, 417, 943, 1219, 2173, 2829, 3197, 3657, 5699, 6519, 7367, 9591, 17097, 22101, 49979, 131077, 149937, 169441, 302047, 393231, 508323, 906141, 6947081, 20841243]

約数ペア:

[(1, 20841243), (3, 6947081), (23, 906141), (41, 508323), (53, 393231), (69, 302047), (123, 169441), (139, 149937), (159, 131077), (417, 49979), (943, 22101), (1219, 17097), (2173, 9591), (2829, 7367), (3197, 6519), (3657, 5699)]