21150819

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{691}}^1$

素因数の和:895

約数の個数: 24

約数和(自身を含む): 32385600

約数和(自身を除く): 11234781

約数列:

[1, 3, 9, 19, 57, 171, 179, 537, 691, 1611, 2073, 3401, 6219, 10203, 13129, 30609, 39387, 118161, 123689, 371067, 1113201, 2350091, 7050273, 21150819]

約数ペア:

[(1, 21150819), (3, 7050273), (9, 2350091), (19, 1113201), (57, 371067), (171, 123689), (179, 118161), (537, 39387), (691, 30609), (1611, 13129), (2073, 10203), (3401, 6219)]