21242265

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7573}}^1$

素因数の和:7609

約数の個数: 32

約数和(自身を含む): 39263616

約数和(自身を除く): 18021351

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 561, 935, 2805, 7573, 22719, 37865, 83303, 113595, 128741, 249909, 386223, 416515, 643705, 1249545, 1416151, 1931115, 4248453, 7080755, 21242265]

約数ペア:

[(1, 21242265), (3, 7080755), (5, 4248453), (11, 1931115), (15, 1416151), (17, 1249545), (33, 643705), (51, 416515), (55, 386223), (85, 249909), (165, 128741), (187, 113595), (255, 83303), (561, 37865), (935, 22719), (2805, 7573)]