18875709

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{1361}}^1$

素因数の和:1457

約数の個数: 24

約数和(自身を含む): 28896192

約数和(自身を除く): 10020483

約数列:

[1, 3, 9, 23, 67, 69, 201, 207, 603, 1361, 1541, 4083, 4623, 12249, 13869, 31303, 91187, 93909, 273561, 281727, 820683, 2097301, 6291903, 18875709]

約数ペア:

[(1, 18875709), (3, 6291903), (9, 2097301), (23, 820683), (67, 281727), (69, 273561), (201, 93909), (207, 91187), (603, 31303), (1361, 13869), (1541, 12249), (4083, 4623)]