17978807

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{12289}}^1$

素因数の和:12326

約数の個数: 16

約数和(自身を含む): 23596800

約数和(自身を除く): 5617993

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 12289, 86023, 135179, 233491, 946253, 1634437, 2568401, 17978807]

約数ペア:

[(1, 17978807), (7, 2568401), (11, 1634437), (19, 946253), (77, 233491), (133, 135179), (209, 86023), (1463, 12289)]