28440279

素因数分解:

$3^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{4219}}^1$

素因数の和:4339

約数の個数: 24

約数和(自身を含む): 47399040

約数和(自身を除く): 18958761

約数列:

[1, 3, 7, 9, 21, 63, 107, 321, 749, 963, 2247, 4219, 6741, 12657, 29533, 37971, 88599, 265797, 451433, 1354299, 3160031, 4062897, 9480093, 28440279]

約数ペア:

[(1, 28440279), (3, 9480093), (7, 4062897), (9, 3160031), (21, 1354299), (63, 451433), (107, 265797), (321, 88599), (749, 37971), (963, 29533), (2247, 12657), (4219, 6741)]