261396863

素因数分解:

$7^1\times {\mathrm{13}}^3\times {\mathrm{23}}^1\times {\mathrm{739}}^1$

素因数の和:808

約数の個数: 32

約数和(自身を含む): 338150400

約数和(自身を除く): 76753537

約数列:

[1, 7, 13, 23, 91, 161, 169, 299, 739, 1183, 2093, 2197, 3887, 5173, 9607, 15379, 16997, 27209, 50531, 67249, 118979, 124891, 220961, 353717, 874237, 1546727, 1623583, 2872493, 11365081, 20107451, 37342409, 261396863]

約数ペア:

[(1, 261396863), (7, 37342409), (13, 20107451), (23, 11365081), (91, 2872493), (161, 1623583), (169, 1546727), (299, 874237), (739, 353717), (1183, 220961), (2093, 124891), (2197, 118979), (3887, 67249), (5173, 50531), (9607, 27209), (15379, 16997)]