21382280

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{18433}}^1$

素因数の和:18473

約数の個数: 32

約数和(自身を含む): 49771800

約数和(自身を除く): 28389520

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 18433, 36866, 73732, 92165, 147464, 184330, 368660, 534557, 737320, 1069114, 2138228, 2672785, 4276456, 5345570, 10691140, 21382280]

約数ペア:

[(1, 21382280), (2, 10691140), (4, 5345570), (5, 4276456), (8, 2672785), (10, 2138228), (20, 1069114), (29, 737320), (40, 534557), (58, 368660), (116, 184330), (145, 147464), (232, 92165), (290, 73732), (580, 36866), (1160, 18433)]