16720767

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{5647}}^1$

素因数の和:5707

約数の個数: 24

約数和(自身を含む): 28194816

約数和(自身を除く): 11474049

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 5647, 16941, 39529, 50823, 118587, 265409, 355761, 796227, 1857863, 2388681, 5573589, 16720767]

約数ペア:

[(1, 16720767), (3, 5573589), (7, 2388681), (9, 1857863), (21, 796227), (47, 355761), (63, 265409), (141, 118587), (329, 50823), (423, 39529), (987, 16941), (2961, 5647)]