20367879

素因数分解:

$3^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{1091}}^1$

素因数の和:1235

約数の個数: 24

約数和(自身を含む): 31868928

約数和(自身を除く): 11501049

約数列:

[1, 3, 7, 21, 49, 127, 147, 381, 889, 1091, 2667, 3273, 6223, 7637, 18669, 22911, 53459, 138557, 160377, 415671, 969899, 2909697, 6789293, 20367879]

約数ペア:

[(1, 20367879), (3, 6789293), (7, 2909697), (21, 969899), (49, 415671), (127, 160377), (147, 138557), (381, 53459), (889, 22911), (1091, 18669), (2667, 7637), (3273, 6223)]