12040721

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:365

約数の個数: 24

約数和(自身を含む): 15513120

約数和(自身を除く): 3472399

約数列:

[1, 7, 11, 49, 77, 89, 251, 539, 623, 979, 1757, 2761, 4361, 6853, 12299, 19327, 22339, 47971, 135289, 156373, 245729, 1094611, 1720103, 12040721]

約数ペア:

[(1, 12040721), (7, 1720103), (11, 1094611), (49, 245729), (77, 156373), (89, 135289), (251, 47971), (539, 22339), (623, 19327), (979, 12299), (1757, 6853), (2761, 4361)]