20968857

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25603}}^1$

素因数の和:25629

約数の個数: 24

約数和(自身を含む): 37279424

約数和(自身を除く): 16310567

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 25603, 76809, 179221, 230427, 332839, 537663, 998517, 1612989, 2329873, 2995551, 6989619, 20968857]

約数ペア:

[(1, 20968857), (3, 6989619), (7, 2995551), (9, 2329873), (13, 1612989), (21, 998517), (39, 537663), (63, 332839), (91, 230427), (117, 179221), (273, 76809), (819, 25603)]