21013293

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{7879}}^1$

素因数の和:8016

約数の個数: 16

約数和(自身を含む): 32276480

約数和(自身を除く): 11263187

約数列:

[1, 3, 7, 21, 127, 381, 889, 2667, 7879, 23637, 55153, 165459, 1000633, 3001899, 7004431, 21013293]

約数ペア:

[(1, 21013293), (3, 7004431), (7, 3001899), (21, 1000633), (127, 165459), (381, 55153), (889, 23637), (2667, 7879)]