18667340

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8563}}^1$

素因数の和:8681

約数の個数: 24

約数和(自身を含む): 39565680

約数和(自身を除く): 20898340

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8563, 17126, 34252, 42815, 85630, 171260, 933367, 1866734, 3733468, 4666835, 9333670, 18667340]

約数ペア:

[(1, 18667340), (2, 9333670), (4, 4666835), (5, 3733468), (10, 1866734), (20, 933367), (109, 171260), (218, 85630), (436, 42815), (545, 34252), (1090, 17126), (2180, 8563)]