725193

素因数分解:

$3^4\times 7^1\times {\mathrm{1279}}^1$

素因数の和:1298

約数の個数: 20

約数和(自身を含む): 1239040

約数和(自身を除く): 513847

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 1279, 3837, 8953, 11511, 26859, 34533, 80577, 103599, 241731, 725193]

約数ペア:

[(1, 725193), (3, 241731), (7, 103599), (9, 80577), (21, 34533), (27, 26859), (63, 11511), (81, 8953), (189, 3837), (567, 1279)]