21077749

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{827}}^1$

素因数の和:1176

約数の個数: 16

約数和(自身を含む): 26390016

約数和(自身を除く): 5312267

約数列:

[1, 7, 11, 77, 331, 827, 2317, 3641, 5789, 9097, 25487, 63679, 273737, 1916159, 3011107, 21077749]

約数ペア:

[(1, 21077749), (7, 3011107), (11, 1916159), (77, 273737), (331, 63679), (827, 25487), (2317, 9097), (3641, 5789)]