28281393

素因数分解:

$3^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1609}}^1$

素因数の和:1659

約数の個数: 40

約数和(自身を含む): 49871360

約数和(自身を除く): 21589967

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 81, 93, 189, 217, 279, 567, 651, 837, 1609, 1953, 2511, 4827, 5859, 11263, 14481, 17577, 33789, 43443, 49879, 101367, 130329, 149637, 304101, 349153, 448911, 912303, 1047459, 1346733, 3142377, 4040199, 9427131, 28281393]

約数ペア:

[(1, 28281393), (3, 9427131), (7, 4040199), (9, 3142377), (21, 1346733), (27, 1047459), (31, 912303), (63, 448911), (81, 349153), (93, 304101), (189, 149637), (217, 130329), (279, 101367), (567, 49879), (651, 43443), (837, 33789), (1609, 17577), (1953, 14481), (2511, 11263), (4827, 5859)]