21493732

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{3863}}^1$

素因数の和:3987

約数の個数: 24

約数和(自身を含む): 40896576

約数和(自身を除く): 19402844

約数列:

[1, 2, 4, 13, 26, 52, 107, 214, 428, 1391, 2782, 3863, 5564, 7726, 15452, 50219, 100438, 200876, 413341, 826682, 1653364, 5373433, 10746866, 21493732]

約数ペア:

[(1, 21493732), (2, 10746866), (4, 5373433), (13, 1653364), (26, 826682), (52, 413341), (107, 200876), (214, 100438), (428, 50219), (1391, 15452), (2782, 7726), (3863, 5564)]