19878831

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{269}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 17445969

約数列:

[1, 3, 7, 9, 17, 21, 23, 27, 51, 63, 69, 119, 153, 161, 189, 207, 269, 357, 391, 459, 483, 621, 807, 1071, 1173, 1449, 1883, 2421, 2737, 3213, 3519, 4347, 4573, 5649, 6187, 7263, 8211, 10557, 13719, 16947, 18561, 24633, 32011, 41157, 43309, 50841, 55683, 73899, 96033, 105179, 123471, 129927, 167049, 288099, 315537, 389781, 736253, 864297, 946611, 1169343, 2208759, 2839833, 6626277, 19878831]

約数ペア:

[(1, 19878831), (3, 6626277), (7, 2839833), (9, 2208759), (17, 1169343), (21, 946611), (23, 864297), (27, 736253), (51, 389781), (63, 315537), (69, 288099), (119, 167049), (153, 129927), (161, 123471), (189, 105179), (207, 96033), (269, 73899), (357, 55683), (391, 50841), (459, 43309), (483, 41157), (621, 32011), (807, 24633), (1071, 18561), (1173, 16947), (1449, 13719), (1883, 10557), (2421, 8211), (2737, 7263), (3213, 6187), (3519, 5649), (4347, 4573)]