209957295

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{1439}}^1$

素因数の和:1655

約数の個数: 32

約数和(自身を含む): 343388160

約数和(自身を除く): 133430865

約数列:

[1, 3, 5, 15, 71, 137, 213, 355, 411, 685, 1065, 1439, 2055, 4317, 7195, 9727, 21585, 29181, 48635, 102169, 145905, 197143, 306507, 510845, 591429, 985715, 1532535, 2957145, 13997153, 41991459, 69985765, 209957295]

約数ペア:

[(1, 209957295), (3, 69985765), (5, 41991459), (15, 13997153), (71, 2957145), (137, 1532535), (213, 985715), (355, 591429), (411, 510845), (685, 306507), (1065, 197143), (1439, 145905), (2055, 102169), (4317, 48635), (7195, 29181), (9727, 21585)]