28364140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{281}}^1$

素因数の和:407

約数の個数: 72

約数和(自身を含む): 70211232

約数和(自身を除く): 41847092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 103, 140, 196, 206, 245, 281, 412, 490, 515, 562, 721, 980, 1030, 1124, 1405, 1442, 1967, 2060, 2810, 2884, 3605, 3934, 5047, 5620, 7210, 7868, 9835, 10094, 13769, 14420, 19670, 20188, 25235, 27538, 28943, 39340, 50470, 55076, 57886, 68845, 100940, 115772, 137690, 144715, 202601, 275380, 289430, 405202, 578860, 810404, 1013005, 1418207, 2026010, 2836414, 4052020, 5672828, 7091035, 14182070, 28364140]

約数ペア:

[(1, 28364140), (2, 14182070), (4, 7091035), (5, 5672828), (7, 4052020), (10, 2836414), (14, 2026010), (20, 1418207), (28, 1013005), (35, 810404), (49, 578860), (70, 405202), (98, 289430), (103, 275380), (140, 202601), (196, 144715), (206, 137690), (245, 115772), (281, 100940), (412, 68845), (490, 57886), (515, 55076), (562, 50470), (721, 39340), (980, 28943), (1030, 27538), (1124, 25235), (1405, 20188), (1442, 19670), (1967, 14420), (2060, 13769), (2810, 10094), (2884, 9835), (3605, 7868), (3934, 7210), (5047, 5620)]