18694040

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1777}}^1$

素因数の和:2051

約数の個数: 32

約数和(自身を含む): 42245280

約数和(自身を除く): 23551240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 1777, 2104, 2630, 3554, 5260, 7108, 8885, 10520, 14216, 17770, 35540, 71080, 467351, 934702, 1869404, 2336755, 3738808, 4673510, 9347020, 18694040]

約数ペア:

[(1, 18694040), (2, 9347020), (4, 4673510), (5, 3738808), (8, 2336755), (10, 1869404), (20, 934702), (40, 467351), (263, 71080), (526, 35540), (1052, 17770), (1315, 14216), (1777, 10520), (2104, 8885), (2630, 7108), (3554, 5260)]