21928347

素因数分解:

$3^3\times 7^1\times {\mathrm{157}}^1\times {\mathrm{739}}^1$

素因数の和:912

約数の個数: 32

約数和(自身を含む): 37414400

約数和(自身を除く): 15486053

約数列:

[1, 3, 7, 9, 21, 27, 63, 157, 189, 471, 739, 1099, 1413, 2217, 3297, 4239, 5173, 6651, 9891, 15519, 19953, 29673, 46557, 116023, 139671, 348069, 812161, 1044207, 2436483, 3132621, 7309449, 21928347]

約数ペア:

[(1, 21928347), (3, 7309449), (7, 3132621), (9, 2436483), (21, 1044207), (27, 812161), (63, 348069), (157, 139671), (189, 116023), (471, 46557), (739, 29673), (1099, 19953), (1413, 15519), (2217, 9891), (3297, 6651), (4239, 5173)]