18200889

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 33177600

約数和(自身を除く): 14976711

約数列:

[1, 3, 7, 9, 21, 23, 27, 53, 63, 69, 79, 159, 161, 189, 207, 237, 371, 477, 483, 553, 621, 711, 1113, 1219, 1431, 1449, 1659, 1817, 2133, 3339, 3657, 4187, 4347, 4977, 5451, 8533, 10017, 10971, 12561, 12719, 14931, 16353, 25599, 29309, 32913, 37683, 38157, 49059, 76797, 87927, 96301, 113049, 114471, 230391, 263781, 288903, 343413, 674107, 791343, 866709, 2022321, 2600127, 6066963, 18200889]

約数ペア:

[(1, 18200889), (3, 6066963), (7, 2600127), (9, 2022321), (21, 866709), (23, 791343), (27, 674107), (53, 343413), (63, 288903), (69, 263781), (79, 230391), (159, 114471), (161, 113049), (189, 96301), (207, 87927), (237, 76797), (371, 49059), (477, 38157), (483, 37683), (553, 32913), (621, 29309), (711, 25599), (1113, 16353), (1219, 14931), (1431, 12719), (1449, 12561), (1659, 10971), (1817, 10017), (2133, 8533), (3339, 5451), (3657, 4977), (4187, 4347)]