1639806687

素因数分解:

$3^4\times {\mathrm{313}}^1\times {\mathrm{64679}}^1$

素因数の和:65004

約数の個数: 20

約数和(自身を含む): 2457451920

約数和(自身を除く): 817645233

約数列:

[1, 3, 9, 27, 81, 313, 939, 2817, 8451, 25353, 64679, 194037, 582111, 1746333, 5238999, 20244527, 60733581, 182200743, 546602229, 1639806687]

約数ペア:

[(1, 1639806687), (3, 546602229), (9, 182200743), (27, 60733581), (81, 20244527), (313, 5238999), (939, 1746333), (2817, 582111), (8451, 194037), (25353, 64679)]