145719

素因数分解:

$3^4\times 7^1\times {\mathrm{257}}^1$

素因数の和:276

約数の個数: 20

約数和(自身を含む): 249744

約数和(自身を除く): 104025

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 257, 567, 771, 1799, 2313, 5397, 6939, 16191, 20817, 48573, 145719]

約数ペア:

[(1, 145719), (3, 48573), (7, 20817), (9, 16191), (21, 6939), (27, 5397), (63, 2313), (81, 1799), (189, 771), (257, 567)]