247705521

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{827}}^1\times {\mathrm{839}}^1$

素因数の和:1693

約数の個数: 32

約数和(自身を含む): 400619520

約数和(自身を除く): 152913999

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 827, 839, 2481, 2517, 5789, 5873, 14059, 14263, 17367, 17619, 42177, 42789, 98413, 99841, 295239, 299523, 693853, 2081559, 4856971, 11795501, 14570913, 35386503, 82568507, 247705521]

約数ペア:

[(1, 247705521), (3, 82568507), (7, 35386503), (17, 14570913), (21, 11795501), (51, 4856971), (119, 2081559), (357, 693853), (827, 299523), (839, 295239), (2481, 99841), (2517, 98413), (5789, 42789), (5873, 42177), (14059, 17619), (14263, 17367)]