209223

素因数分解:

$3^6\times 7^1\times {\mathrm{41}}^1$

素因数の和:66

約数の個数: 28

約数和(自身を含む): 367248

約数和(自身を除く): 158025

約数列:

[1, 3, 7, 9, 21, 27, 41, 63, 81, 123, 189, 243, 287, 369, 567, 729, 861, 1107, 1701, 2583, 3321, 5103, 7749, 9963, 23247, 29889, 69741, 209223]

約数ペア:

[(1, 209223), (3, 69741), (7, 29889), (9, 23247), (21, 9963), (27, 7749), (41, 5103), (63, 3321), (81, 2583), (123, 1701), (189, 1107), (243, 861), (287, 729), (369, 567)]