21529557

素因数分解:

$3^6\times 7^1\times {\mathrm{4219}}^1$

素因数の和:4244

約数の個数: 28

約数和(自身を含む): 36899680

約数和(自身を除く): 15370123

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 4219, 5103, 12657, 29533, 37971, 88599, 113913, 265797, 341739, 797391, 1025217, 2392173, 3075651, 7176519, 21529557]

約数ペア:

[(1, 21529557), (3, 7176519), (7, 3075651), (9, 2392173), (21, 1025217), (27, 797391), (63, 341739), (81, 265797), (189, 113913), (243, 88599), (567, 37971), (729, 29533), (1701, 12657), (4219, 5103)]