1321000

素因数分解:

$2^3\times 5^3\times {\mathrm{1321}}^1$

素因数の和:1342

約数の個数: 32

約数和(自身を含む): 3093480

約数和(自身を除く): 1772480

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 1321, 2642, 5284, 6605, 10568, 13210, 26420, 33025, 52840, 66050, 132100, 165125, 264200, 330250, 660500, 1321000]

約数ペア:

[(1, 1321000), (2, 660500), (4, 330250), (5, 264200), (8, 165125), (10, 132100), (20, 66050), (25, 52840), (40, 33025), (50, 26420), (100, 13210), (125, 10568), (200, 6605), (250, 5284), (500, 2642), (1000, 1321)]