644243678

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1304137}}^1$

素因数の和:1304171

約数の個数: 16

約数和(自身を含む): 1095475920

約数和(自身を除く): 451232242

約数列:

[1, 2, 13, 19, 26, 38, 247, 494, 1304137, 2608274, 16953781, 24778603, 33907562, 49557206, 322121839, 644243678]

約数ペア:

[(1, 644243678), (2, 322121839), (13, 49557206), (19, 33907562), (26, 24778603), (38, 16953781), (247, 2608274), (494, 1304137)]