21100581

素因数分解:

$3^4\times {\mathrm{337}}^1\times {\mathrm{773}}^1$

素因数の和:1122

約数の個数: 20

約数和(自身を含む): 31655052

約数和(自身を除く): 10554471

約数列:

[1, 3, 9, 27, 81, 337, 773, 1011, 2319, 3033, 6957, 9099, 20871, 27297, 62613, 260501, 781503, 2344509, 7033527, 21100581]

約数ペア:

[(1, 21100581), (3, 7033527), (9, 2344509), (27, 781503), (81, 260501), (337, 62613), (773, 27297), (1011, 20871), (2319, 9099), (3033, 6957)]