19747280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:396

約数の個数: 80

約数和(自身を含む): 53032320

約数和(自身を除く): 33285040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 179, 197, 280, 358, 394, 560, 716, 788, 895, 985, 1253, 1379, 1432, 1576, 1790, 1970, 2506, 2758, 2864, 3152, 3580, 3940, 5012, 5516, 6265, 6895, 7160, 7880, 10024, 11032, 12530, 13790, 14320, 15760, 20048, 22064, 25060, 27580, 35263, 50120, 55160, 70526, 100240, 110320, 141052, 176315, 246841, 282104, 352630, 493682, 564208, 705260, 987364, 1234205, 1410520, 1974728, 2468410, 2821040, 3949456, 4936820, 9873640, 19747280]

約数ペア:

[(1, 19747280), (2, 9873640), (4, 4936820), (5, 3949456), (7, 2821040), (8, 2468410), (10, 1974728), (14, 1410520), (16, 1234205), (20, 987364), (28, 705260), (35, 564208), (40, 493682), (56, 352630), (70, 282104), (80, 246841), (112, 176315), (140, 141052), (179, 110320), (197, 100240), (280, 70526), (358, 55160), (394, 50120), (560, 35263), (716, 27580), (788, 25060), (895, 22064), (985, 20048), (1253, 15760), (1379, 14320), (1432, 13790), (1576, 12530), (1790, 11032), (1970, 10024), (2506, 7880), (2758, 7160), (2864, 6895), (3152, 6265), (3580, 5516), (3940, 5012)]