209255039

素因数分解:

$7^3\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:352

約数の個数: 32

約数和(自身を含む): 256080000

約数和(自身を除く): 46824961

約数列:

[1, 7, 29, 49, 109, 193, 203, 343, 763, 1351, 1421, 3161, 5341, 5597, 9457, 9947, 21037, 22127, 37387, 39179, 66199, 147259, 154889, 274253, 610073, 1030813, 1084223, 1919771, 4270511, 7215691, 29893577, 209255039]

約数ペア:

[(1, 209255039), (7, 29893577), (29, 7215691), (49, 4270511), (109, 1919771), (193, 1084223), (203, 1030813), (343, 610073), (763, 274253), (1351, 154889), (1421, 147259), (3161, 66199), (5341, 39179), (5597, 37387), (9457, 22127), (9947, 21037)]