20158047

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 36295168

約数和(自身を除く): 16137121

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 151, 163, 273, 453, 489, 819, 1057, 1141, 1359, 1467, 1963, 2119, 3171, 3423, 5889, 6357, 9513, 10269, 13741, 14833, 17667, 19071, 24613, 41223, 44499, 73839, 123669, 133497, 172291, 221517, 319969, 516873, 959907, 1550619, 2239783, 2879721, 6719349, 20158047]

約数ペア:

[(1, 20158047), (3, 6719349), (7, 2879721), (9, 2239783), (13, 1550619), (21, 959907), (39, 516873), (63, 319969), (91, 221517), (117, 172291), (151, 133497), (163, 123669), (273, 73839), (453, 44499), (489, 41223), (819, 24613), (1057, 19071), (1141, 17667), (1359, 14833), (1467, 13741), (1963, 10269), (2119, 9513), (3171, 6357), (3423, 5889)]