209217475

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{311}}^1\times {\mathrm{379}}^1$

素因数の和:771

約数の個数: 24

約数和(自身を含む): 264625920

約数和(自身を除く): 55408445

約数列:

[1, 5, 25, 71, 311, 355, 379, 1555, 1775, 1895, 7775, 9475, 22081, 26909, 110405, 117869, 134545, 552025, 589345, 672725, 2946725, 8368699, 41843495, 209217475]

約数ペア:

[(1, 209217475), (5, 41843495), (25, 8368699), (71, 2946725), (311, 672725), (355, 589345), (379, 552025), (1555, 134545), (1775, 117869), (1895, 110405), (7775, 26909), (9475, 22081)]