1278488939

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{286721}}^1$

素因数の和:286755

約数の個数: 16

約数和(自身を含む): 1605643200

約数和(自身を除く): 327154261

約数列:

[1, 7, 13, 49, 91, 343, 637, 4459, 286721, 2007047, 3727373, 14049329, 26091611, 98345303, 182641277, 1278488939]

約数ペア:

[(1, 1278488939), (7, 182641277), (13, 98345303), (49, 26091611), (91, 14049329), (343, 3727373), (637, 2007047), (4459, 286721)]