20996427

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 30336768

約数和(自身を除く): 9340341

約数列:

[1, 3, 37, 43, 53, 83, 111, 129, 159, 249, 1591, 1961, 2279, 3071, 3569, 4399, 4773, 5883, 6837, 9213, 10707, 13197, 84323, 132053, 162763, 189157, 252969, 396159, 488289, 567471, 6998809, 20996427]

約数ペア:

[(1, 20996427), (3, 6998809), (37, 567471), (43, 488289), (53, 396159), (83, 252969), (111, 189157), (129, 162763), (159, 132053), (249, 84323), (1591, 13197), (1961, 10707), (2279, 9213), (3071, 6837), (3569, 5883), (4399, 4773)]