638856747

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{769}}^1\times {\mathrm{1061}}^1$

素因数の和:1868

約数の個数: 32

約数和(自身を含む): 981288000

約数和(自身を除く): 342431253

約数列:

[1, 3, 9, 27, 29, 87, 261, 769, 783, 1061, 2307, 3183, 6921, 9549, 20763, 22301, 28647, 30769, 66903, 92307, 200709, 276921, 602127, 815909, 830763, 2447727, 7343181, 22029543, 23661361, 70984083, 212952249, 638856747]

約数ペア:

[(1, 638856747), (3, 212952249), (9, 70984083), (27, 23661361), (29, 22029543), (87, 7343181), (261, 2447727), (769, 830763), (783, 815909), (1061, 602127), (2307, 276921), (3183, 200709), (6921, 92307), (9549, 66903), (20763, 30769), (22301, 28647)]