648156905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{12497}}^1$

素因数の和:12577

約数の個数: 32

約数和(自身を含む): 907054848

約数和(自身を除く): 258897943

約数列:

[1, 5, 11, 23, 41, 55, 115, 205, 253, 451, 943, 1265, 2255, 4715, 10373, 12497, 51865, 62485, 137467, 287431, 512377, 687335, 1437155, 2561885, 3161741, 5636147, 11784671, 15808705, 28180735, 58923355, 129631381, 648156905]

約数ペア:

[(1, 648156905), (5, 129631381), (11, 58923355), (23, 28180735), (41, 15808705), (55, 11784671), (115, 5636147), (205, 3161741), (253, 2561885), (451, 1437155), (943, 687335), (1265, 512377), (2255, 287431), (4715, 137467), (10373, 62485), (12497, 51865)]