256720317

素因数分解:

$3^1\times 7^1\times {\mathrm{2161}}^1\times {\mathrm{5657}}^1$

素因数の和:7828

約数の個数: 16

約数和(自身を含む): 391443072

約数和(自身を除く): 134722755

約数列:

[1, 3, 7, 21, 2161, 5657, 6483, 15127, 16971, 39599, 45381, 118797, 12224777, 36674331, 85573439, 256720317]

約数ペア:

[(1, 256720317), (3, 85573439), (7, 36674331), (21, 12224777), (2161, 118797), (5657, 45381), (6483, 39599), (15127, 16971)]