18580072

素因数分解:

$2^3\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1291}}^1$

素因数の和:1561

約数の個数: 32

約数和(自身を含む): 40000320

約数和(自身を除く): 21420248

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 257, 514, 1028, 1291, 1799, 2056, 2582, 3598, 5164, 7196, 9037, 10328, 14392, 18074, 36148, 72296, 331787, 663574, 1327148, 2322509, 2654296, 4645018, 9290036, 18580072]

約数ペア:

[(1, 18580072), (2, 9290036), (4, 4645018), (7, 2654296), (8, 2322509), (14, 1327148), (28, 663574), (56, 331787), (257, 72296), (514, 36148), (1028, 18074), (1291, 14392), (1799, 10328), (2056, 9037), (2582, 7196), (3598, 5164)]