20745879

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89809}}^1$

素因数の和:89830

約数の個数: 16

約数和(自身を含む): 34487040

約数和(自身を除く): 13741161

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 89809, 269427, 628663, 987899, 1885989, 2963697, 6915293, 20745879]

約数ペア:

[(1, 20745879), (3, 6915293), (7, 2963697), (11, 1885989), (21, 987899), (33, 628663), (77, 269427), (231, 89809)]