19939569

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 30643200

約数和(自身を除く): 10703631

約数列:

[1, 3, 13, 19, 39, 57, 71, 213, 247, 379, 741, 923, 1137, 1349, 2769, 4047, 4927, 7201, 14781, 17537, 21603, 26909, 52611, 80727, 93613, 280839, 349817, 511271, 1049451, 1533813, 6646523, 19939569]

約数ペア:

[(1, 19939569), (3, 6646523), (13, 1533813), (19, 1049451), (39, 511271), (57, 349817), (71, 280839), (213, 93613), (247, 80727), (379, 52611), (741, 26909), (923, 21603), (1137, 17537), (1349, 14781), (2769, 7201), (4047, 4927)]