18138140

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{193}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 39631872

約数和(自身を除く): 21493732

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 127, 148, 185, 193, 254, 370, 386, 508, 635, 740, 772, 965, 1270, 1930, 2540, 3860, 4699, 7141, 9398, 14282, 18796, 23495, 24511, 28564, 35705, 46990, 49022, 71410, 93980, 98044, 122555, 142820, 245110, 490220, 906907, 1813814, 3627628, 4534535, 9069070, 18138140]

約数ペア:

[(1, 18138140), (2, 9069070), (4, 4534535), (5, 3627628), (10, 1813814), (20, 906907), (37, 490220), (74, 245110), (127, 142820), (148, 122555), (185, 98044), (193, 93980), (254, 71410), (370, 49022), (386, 46990), (508, 35705), (635, 28564), (740, 24511), (772, 23495), (965, 18796), (1270, 14282), (1930, 9398), (2540, 7141), (3860, 4699)]