19764004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{8839}}^1$

素因数の和:8899

約数の個数: 24

約数和(自身を含む): 38118080

約数和(自身を除く): 18354076

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 8839, 17678, 35356, 114907, 229814, 380077, 459628, 760154, 1520308, 4941001, 9882002, 19764004]

約数ペア:

[(1, 19764004), (2, 9882002), (4, 4941001), (13, 1520308), (26, 760154), (43, 459628), (52, 380077), (86, 229814), (172, 114907), (559, 35356), (1118, 17678), (2236, 8839)]