18777681

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8447}}^1$

素因数の和:8485

約数の個数: 24

約数和(自身を含む): 30750720

約数和(自身を除く): 11973039

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 8447, 25341, 76023, 109811, 160493, 329433, 481479, 988299, 1444437, 2086409, 6259227, 18777681]

約数ペア:

[(1, 18777681), (3, 6259227), (9, 2086409), (13, 1444437), (19, 988299), (39, 481479), (57, 329433), (117, 160493), (171, 109811), (247, 76023), (741, 25341), (2223, 8447)]