2781261

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{337}}^1$

素因数の和:481

約数の個数: 24

約数和(自身を含む): 4640064

約数和(自身を除く): 1858803

約数列:

[1, 3, 7, 9, 21, 63, 131, 337, 393, 917, 1011, 1179, 2359, 2751, 3033, 7077, 8253, 21231, 44147, 132441, 309029, 397323, 927087, 2781261]

約数ペア:

[(1, 2781261), (3, 927087), (7, 397323), (9, 309029), (21, 132441), (63, 44147), (131, 21231), (337, 8253), (393, 7077), (917, 3033), (1011, 2751), (1179, 2359)]