82564000

素因数分解:

$2^5\times 5^3\times {\mathrm{20641}}^1$

素因数の和:20666

約数の個数: 48

約数和(自身を含む): 202869576

約数和(自身を除く): 120305576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 20641, 41282, 82564, 103205, 165128, 206410, 330256, 412820, 516025, 660512, 825640, 1032050, 1651280, 2064100, 2580125, 3302560, 4128200, 5160250, 8256400, 10320500, 16512800, 20641000, 41282000, 82564000]

約数ペア:

[(1, 82564000), (2, 41282000), (4, 20641000), (5, 16512800), (8, 10320500), (10, 8256400), (16, 5160250), (20, 4128200), (25, 3302560), (32, 2580125), (40, 2064100), (50, 1651280), (80, 1032050), (100, 825640), (125, 660512), (160, 516025), (200, 412820), (250, 330256), (400, 206410), (500, 165128), (800, 103205), (1000, 82564), (2000, 41282), (4000, 20641)]