28886137

素因数分解:

$7^2\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:146

約数の個数: 36

約数和(自身を含む): 37526976

約数和(自身を除く): 8640839

約数列:

[1, 7, 19, 23, 49, 71, 133, 161, 361, 437, 497, 931, 1127, 1349, 1633, 2527, 3059, 3479, 8303, 9443, 11431, 17689, 21413, 25631, 31027, 58121, 66101, 80017, 179417, 217189, 406847, 589513, 1255919, 1520323, 4126591, 28886137]

約数ペア:

[(1, 28886137), (7, 4126591), (19, 1520323), (23, 1255919), (49, 589513), (71, 406847), (133, 217189), (161, 179417), (361, 80017), (437, 66101), (497, 58121), (931, 31027), (1127, 25631), (1349, 21413), (1633, 17689), (2527, 11431), (3059, 9443), (3479, 8303)]