2820920

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{647}}^1$

素因数の和:767

約数の個数: 32

約数和(自身を含む): 6415200

約数和(自身を除く): 3594280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 647, 872, 1090, 1294, 2180, 2588, 3235, 4360, 5176, 6470, 12940, 25880, 70523, 141046, 282092, 352615, 564184, 705230, 1410460, 2820920]

約数ペア:

[(1, 2820920), (2, 1410460), (4, 705230), (5, 564184), (8, 352615), (10, 282092), (20, 141046), (40, 70523), (109, 25880), (218, 12940), (436, 6470), (545, 5176), (647, 4360), (872, 3235), (1090, 2588), (1294, 2180)]