20947509

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{457}}^1\times {\mathrm{463}}^1$

素因数の和:937

約数の個数: 24

約数和(自身を含む): 33151872

約数和(自身を除く): 12204363

約数列:

[1, 3, 9, 11, 33, 99, 457, 463, 1371, 1389, 4113, 4167, 5027, 5093, 15081, 15279, 45243, 45837, 211591, 634773, 1904319, 2327501, 6982503, 20947509]

約数ペア:

[(1, 20947509), (3, 6982503), (9, 2327501), (11, 1904319), (33, 634773), (99, 211591), (457, 45837), (463, 45243), (1371, 15279), (1389, 15081), (4113, 5093), (4167, 5027)]