19866077

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{367}}^1$

素因数の和:441

約数の個数: 32

約数和(自身を含む): 26849280

約数和(自身を除く): 6983203

約数列:

[1, 7, 11, 19, 37, 77, 133, 209, 259, 367, 407, 703, 1463, 2569, 2849, 4037, 4921, 6973, 7733, 13579, 28259, 48811, 54131, 76703, 95053, 149369, 258001, 536921, 1045583, 1806007, 2838011, 19866077]

約数ペア:

[(1, 19866077), (7, 2838011), (11, 1806007), (19, 1045583), (37, 536921), (77, 258001), (133, 149369), (209, 95053), (259, 76703), (367, 54131), (407, 48811), (703, 28259), (1463, 13579), (2569, 7733), (2849, 6973), (4037, 4921)]