19804953

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{359}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 11713767

約数列:

[1, 3, 7, 21, 37, 71, 111, 213, 259, 359, 497, 777, 1077, 1491, 2513, 2627, 7539, 7881, 13283, 18389, 25489, 39849, 55167, 76467, 92981, 178423, 278943, 535269, 943093, 2829279, 6601651, 19804953]

約数ペア:

[(1, 19804953), (3, 6601651), (7, 2829279), (21, 943093), (37, 535269), (71, 278943), (111, 178423), (213, 92981), (259, 76467), (359, 55167), (497, 39849), (777, 25489), (1077, 18389), (1491, 13283), (2513, 7881), (2627, 7539)]