21158247

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{8783}}^1$

素因数の和:8870

約数の個数: 16

約数和(自身を含む): 31200768

約数和(自身を除く): 10042521

約数列:

[1, 3, 11, 33, 73, 219, 803, 2409, 8783, 26349, 96613, 289839, 641159, 1923477, 7052749, 21158247]

約数ペア:

[(1, 21158247), (3, 7052749), (11, 1923477), (33, 641159), (73, 289839), (219, 96613), (803, 26349), (2409, 8783)]