18087460

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8297}}^1$

素因数の和:8415

約数の個数: 24

約数和(自身を含む): 38336760

約数和(自身を除く): 20249300

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8297, 16594, 33188, 41485, 82970, 165940, 904373, 1808746, 3617492, 4521865, 9043730, 18087460]

約数ペア:

[(1, 18087460), (2, 9043730), (4, 4521865), (5, 3617492), (10, 1808746), (20, 904373), (109, 165940), (218, 82970), (436, 41485), (545, 33188), (1090, 16594), (2180, 8297)]