18663340

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{3631}}^1$

素因数の和:3897

約数の個数: 24

約数和(自身を含む): 39356352

約数和(自身を除く): 20693012

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 3631, 5140, 7262, 14524, 18155, 36310, 72620, 933167, 1866334, 3732668, 4665835, 9331670, 18663340]

約数ペア:

[(1, 18663340), (2, 9331670), (4, 4665835), (5, 3732668), (10, 1866334), (20, 933167), (257, 72620), (514, 36310), (1028, 18155), (1285, 14524), (2570, 7262), (3631, 5140)]