256869123

素因数分解:

$3^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{13339}}^1$

素因数の和:13487

約数の個数: 24

約数和(自身を含む): 401480640

約数和(自身を除く): 144611517

約数列:

[1, 3, 7, 21, 49, 131, 147, 393, 917, 2751, 6419, 13339, 19257, 40017, 93373, 280119, 653611, 1747409, 1960833, 5242227, 12231863, 36695589, 85623041, 256869123]

約数ペア:

[(1, 256869123), (3, 85623041), (7, 36695589), (21, 12231863), (49, 5242227), (131, 1960833), (147, 1747409), (393, 653611), (917, 280119), (2751, 93373), (6419, 40017), (13339, 19257)]