840004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1123}}^1$

素因数の和:1155

約数の個数: 24

約数和(自身を含む): 1699488

約数和(自身を除く): 859484

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 187, 374, 748, 1123, 2246, 4492, 12353, 19091, 24706, 38182, 49412, 76364, 210001, 420002, 840004]

約数ペア:

[(1, 840004), (2, 420002), (4, 210001), (11, 76364), (17, 49412), (22, 38182), (34, 24706), (44, 19091), (68, 12353), (187, 4492), (374, 2246), (748, 1123)]