19484848

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:401

約数の個数: 40

約数和(自身を含む): 39108608

約数和(自身を除く): 19623760

約数列:

[1, 2, 4, 8, 16, 43, 86, 127, 172, 223, 254, 344, 446, 508, 688, 892, 1016, 1784, 2032, 3568, 5461, 9589, 10922, 19178, 21844, 28321, 38356, 43688, 56642, 76712, 87376, 113284, 153424, 226568, 453136, 1217803, 2435606, 4871212, 9742424, 19484848]

約数ペア:

[(1, 19484848), (2, 9742424), (4, 4871212), (8, 2435606), (16, 1217803), (43, 453136), (86, 226568), (127, 153424), (172, 113284), (223, 87376), (254, 76712), (344, 56642), (446, 43688), (508, 38356), (688, 28321), (892, 21844), (1016, 19178), (1784, 10922), (2032, 9589), (3568, 5461)]