2564440

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1051}}^1$

素因数の和:1123

約数の個数: 32

約数和(自身を含む): 5870160

約数和(自身を除く): 3305720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1051, 1220, 2102, 2440, 4204, 5255, 8408, 10510, 21020, 42040, 64111, 128222, 256444, 320555, 512888, 641110, 1282220, 2564440]

約数ペア:

[(1, 2564440), (2, 1282220), (4, 641110), (5, 512888), (8, 320555), (10, 256444), (20, 128222), (40, 64111), (61, 42040), (122, 21020), (244, 10510), (305, 8408), (488, 5255), (610, 4204), (1051, 2440), (1220, 2102)]