13216225

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{257}}^1$

素因数の和:306

約数の個数: 36

約数和(自身を含む): 19147212

約数和(自身を除く): 5930987

約数列:

[1, 5, 11, 17, 25, 55, 85, 121, 187, 257, 275, 425, 605, 935, 1285, 2057, 2827, 3025, 4369, 4675, 6425, 10285, 14135, 21845, 31097, 48059, 51425, 70675, 109225, 155485, 240295, 528649, 777425, 1201475, 2643245, 13216225]

約数ペア:

[(1, 13216225), (5, 2643245), (11, 1201475), (17, 777425), (25, 528649), (55, 240295), (85, 155485), (121, 109225), (187, 70675), (257, 51425), (275, 48059), (425, 31097), (605, 21845), (935, 14135), (1285, 10285), (2057, 6425), (2827, 4675), (3025, 4369)]