20977005

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{83}}^2$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 40164480

約数和(自身を除く): 19187475

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 83, 87, 105, 145, 203, 249, 415, 435, 581, 609, 1015, 1245, 1743, 2407, 2905, 3045, 6889, 7221, 8715, 12035, 16849, 20667, 34445, 36105, 48223, 50547, 84245, 103335, 144669, 199781, 241115, 252735, 599343, 723345, 998905, 1398467, 2996715, 4195401, 6992335, 20977005]

約数ペア:

[(1, 20977005), (3, 6992335), (5, 4195401), (7, 2996715), (15, 1398467), (21, 998905), (29, 723345), (35, 599343), (83, 252735), (87, 241115), (105, 199781), (145, 144669), (203, 103335), (249, 84245), (415, 50547), (435, 48223), (581, 36105), (609, 34445), (1015, 20667), (1245, 16849), (1743, 12035), (2407, 8715), (2905, 7221), (3045, 6889)]