239841

素因数分解:

$3^6\times 7^1\times {\mathrm{47}}^1$

素因数の和:72

約数の個数: 28

約数和(自身を含む): 419712

約数和(自身を除く): 179871

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 81, 141, 189, 243, 329, 423, 567, 729, 987, 1269, 1701, 2961, 3807, 5103, 8883, 11421, 26649, 34263, 79947, 239841]

約数ペア:

[(1, 239841), (3, 79947), (7, 34263), (9, 26649), (21, 11421), (27, 8883), (47, 5103), (63, 3807), (81, 2961), (141, 1701), (189, 1269), (243, 987), (329, 729), (423, 567)]