20884278317

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{617}}^1\times {\mathrm{1621}}^1$

素因数の和:2421

約数の個数: 32

約数和(自身を含む): 25340570880

約数和(自身を除く): 4456292563

約数列:

[1, 7, 19, 133, 157, 617, 1099, 1621, 2983, 4319, 11347, 11723, 20881, 30799, 82061, 96869, 215593, 254497, 678083, 1000157, 1781479, 1840511, 4835443, 7001099, 12883577, 19002983, 33848101, 133020881, 157024649, 1099172543, 2983468331, 20884278317]

約数ペア:

[(1, 20884278317), (7, 2983468331), (19, 1099172543), (133, 157024649), (157, 133020881), (617, 33848101), (1099, 19002983), (1621, 12883577), (2983, 7001099), (4319, 4835443), (11347, 1840511), (11723, 1781479), (20881, 1000157), (30799, 678083), (82061, 254497), (96869, 215593)]