20386989

素因数分解:

$3^2\times 7^2\times {\mathrm{46229}}^1$

素因数の和:46249

約数の個数: 18

約数和(自身を含む): 34256430

約数和(自身を除く): 13869441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 46229, 138687, 323603, 416061, 970809, 2265221, 2912427, 6795663, 20386989]

約数ペア:

[(1, 20386989), (3, 6795663), (7, 2912427), (9, 2265221), (21, 970809), (49, 416061), (63, 323603), (147, 138687), (441, 46229)]