18712359

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 31056480

約数和(自身を除く): 12344121

約数列:

[1, 3, 9, 17, 19, 41, 51, 57, 123, 153, 157, 171, 323, 369, 471, 697, 779, 969, 1413, 2091, 2337, 2669, 2907, 2983, 6273, 6437, 7011, 8007, 8949, 13243, 19311, 24021, 26847, 39729, 50711, 57933, 109429, 119187, 122303, 152133, 328287, 366909, 456399, 984861, 1100727, 2079151, 6237453, 18712359]

約数ペア:

[(1, 18712359), (3, 6237453), (9, 2079151), (17, 1100727), (19, 984861), (41, 456399), (51, 366909), (57, 328287), (123, 152133), (153, 122303), (157, 119187), (171, 109429), (323, 57933), (369, 50711), (471, 39729), (697, 26847), (779, 24021), (969, 19311), (1413, 13243), (2091, 8949), (2337, 8007), (2669, 7011), (2907, 6437), (2983, 6273)]