18220640

素因数分解:

$2^5\times 5^1\times {\mathrm{263}}^1\times {\mathrm{433}}^1$

素因数の和:711

約数の個数: 48

約数和(自身を含む): 43309728

約数和(自身を除く): 25089088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 263, 433, 526, 866, 1052, 1315, 1732, 2104, 2165, 2630, 3464, 4208, 4330, 5260, 6928, 8416, 8660, 10520, 13856, 17320, 21040, 34640, 42080, 69280, 113879, 227758, 455516, 569395, 911032, 1138790, 1822064, 2277580, 3644128, 4555160, 9110320, 18220640]

約数ペア:

[(1, 18220640), (2, 9110320), (4, 4555160), (5, 3644128), (8, 2277580), (10, 1822064), (16, 1138790), (20, 911032), (32, 569395), (40, 455516), (80, 227758), (160, 113879), (263, 69280), (433, 42080), (526, 34640), (866, 21040), (1052, 17320), (1315, 13856), (1732, 10520), (2104, 8660), (2165, 8416), (2630, 6928), (3464, 5260), (4208, 4330)]