256891271

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{3769}}^1$

素因数の和:3903

約数の個数: 24

約数和(自身を含む): 324913680

約数和(自身を除く): 68022409

約数列:

[1, 7, 13, 49, 91, 107, 637, 749, 1391, 3769, 5243, 9737, 26383, 48997, 68159, 184681, 342979, 403283, 2400853, 2822981, 5242679, 19760867, 36698753, 256891271]

約数ペア:

[(1, 256891271), (7, 36698753), (13, 19760867), (49, 5242679), (91, 2822981), (107, 2400853), (637, 403283), (749, 342979), (1391, 184681), (3769, 68159), (5243, 48997), (9737, 26383)]