20729380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7793}}^1$

素因数の和:7828

約数の個数: 48

約数和(自身を含む): 52375680

約数和(自身を除く): 31646300

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7793, 15586, 31172, 38965, 54551, 77930, 109102, 148067, 155860, 218204, 272755, 296134, 545510, 592268, 740335, 1036469, 1091020, 1480670, 2072938, 2961340, 4145876, 5182345, 10364690, 20729380]

約数ペア:

[(1, 20729380), (2, 10364690), (4, 5182345), (5, 4145876), (7, 2961340), (10, 2072938), (14, 1480670), (19, 1091020), (20, 1036469), (28, 740335), (35, 592268), (38, 545510), (70, 296134), (76, 272755), (95, 218204), (133, 155860), (140, 148067), (190, 109102), (266, 77930), (380, 54551), (532, 38965), (665, 31172), (1330, 15586), (2660, 7793)]