217865720

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{14221}}^1$

素因数の和:14615

約数の個数: 32

約数和(自身を含む): 491512320

約数和(自身を除く): 273646600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1532, 1915, 3064, 3830, 7660, 14221, 15320, 28442, 56884, 71105, 113768, 142210, 284420, 568840, 5446643, 10893286, 21786572, 27233215, 43573144, 54466430, 108932860, 217865720]

約数ペア:

[(1, 217865720), (2, 108932860), (4, 54466430), (5, 43573144), (8, 27233215), (10, 21786572), (20, 10893286), (40, 5446643), (383, 568840), (766, 284420), (1532, 142210), (1915, 113768), (3064, 71105), (3830, 56884), (7660, 28442), (14221, 15320)]