21720007687

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{96931}}^1$

素因数の和:97231

約数の個数: 24

約数和(自身を含む): 26852102640

約数和(自身を除く): 5132094953

約数列:

[1, 7, 17, 49, 119, 269, 833, 1883, 4573, 13181, 32011, 96931, 224077, 678517, 1647827, 4749619, 11534789, 26074439, 80743523, 182521073, 443265463, 1277647511, 3102858241, 21720007687]

約数ペア:

[(1, 21720007687), (7, 3102858241), (17, 1277647511), (49, 443265463), (119, 182521073), (269, 80743523), (833, 26074439), (1883, 11534789), (4573, 4749619), (13181, 1647827), (32011, 678517), (96931, 224077)]