2178309

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2207}}^1$

素因数の和:2264

約数の個数: 16

約数和(自身を含む): 3391488

約数和(自身を除く): 1213179

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 2207, 6621, 15449, 46347, 103729, 311187, 726103, 2178309]

約数ペア:

[(1, 2178309), (3, 726103), (7, 311187), (21, 103729), (47, 46347), (141, 15449), (329, 6621), (987, 2207)]