20576115

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{787}}^1$

素因数の和:888

約数の個数: 48

約数和(自身を含む): 41303808

約数和(自身を除く): 20727693

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 83, 105, 249, 315, 415, 581, 747, 787, 1245, 1743, 2361, 2905, 3735, 3935, 5229, 5509, 7083, 8715, 11805, 16527, 26145, 27545, 35415, 49581, 65321, 82635, 195963, 247905, 326605, 457247, 587889, 979815, 1371741, 2286235, 2939445, 4115223, 6858705, 20576115]

約数ペア:

[(1, 20576115), (3, 6858705), (5, 4115223), (7, 2939445), (9, 2286235), (15, 1371741), (21, 979815), (35, 587889), (45, 457247), (63, 326605), (83, 247905), (105, 195963), (249, 82635), (315, 65321), (415, 49581), (581, 35415), (747, 27545), (787, 26145), (1245, 16527), (1743, 11805), (2361, 8715), (2905, 7083), (3735, 5509), (3935, 5229)]