18755740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{193}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 40870368

約数和(自身を除く): 22114628

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 113, 172, 193, 215, 226, 386, 430, 452, 565, 772, 860, 965, 1130, 1930, 2260, 3860, 4859, 8299, 9718, 16598, 19436, 21809, 24295, 33196, 41495, 43618, 48590, 82990, 87236, 97180, 109045, 165980, 218090, 436180, 937787, 1875574, 3751148, 4688935, 9377870, 18755740]

約数ペア:

[(1, 18755740), (2, 9377870), (4, 4688935), (5, 3751148), (10, 1875574), (20, 937787), (43, 436180), (86, 218090), (113, 165980), (172, 109045), (193, 97180), (215, 87236), (226, 82990), (386, 48590), (430, 43618), (452, 41495), (565, 33196), (772, 24295), (860, 21809), (965, 19436), (1130, 16598), (1930, 9718), (2260, 8299), (3860, 4859)]