217407183

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{3391}}^1$

素因数の和:3515

約数の個数: 32

約数和(自身を含む): 343867392

約数和(自身を除く): 126460209

約数列:

[1, 3, 7, 21, 43, 71, 129, 213, 301, 497, 903, 1491, 3053, 3391, 9159, 10173, 21371, 23737, 64113, 71211, 145813, 240761, 437439, 722283, 1020691, 1685327, 3062073, 5055981, 10352723, 31058169, 72469061, 217407183]

約数ペア:

[(1, 217407183), (3, 72469061), (7, 31058169), (21, 10352723), (43, 5055981), (71, 3062073), (129, 1685327), (213, 1020691), (301, 722283), (497, 437439), (903, 240761), (1491, 145813), (3053, 71211), (3391, 64113), (9159, 23737), (10173, 21371)]