21985191

素因数分解:

$3^2\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{307}}^1$

素因数の和:495

約数の個数: 24

約数和(自身を含む): 32592560

約数和(自身を除く): 10607369

約数列:

[1, 3, 9, 73, 109, 219, 307, 327, 657, 921, 981, 2763, 7957, 22411, 23871, 33463, 67233, 71613, 100389, 201699, 301167, 2442799, 7328397, 21985191]

約数ペア:

[(1, 21985191), (3, 7328397), (9, 2442799), (73, 301167), (109, 201699), (219, 100389), (307, 71613), (327, 67233), (657, 33463), (921, 23871), (981, 22411), (2763, 7957)]