19397128

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{499}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 37620000

約数和(自身を除く): 18222872

約数列:

[1, 2, 4, 8, 43, 86, 113, 172, 226, 344, 452, 499, 904, 998, 1996, 3992, 4859, 9718, 19436, 21457, 38872, 42914, 56387, 85828, 112774, 171656, 225548, 451096, 2424641, 4849282, 9698564, 19397128]

約数ペア:

[(1, 19397128), (2, 9698564), (4, 4849282), (8, 2424641), (43, 451096), (86, 225548), (113, 171656), (172, 112774), (226, 85828), (344, 56387), (452, 42914), (499, 38872), (904, 21457), (998, 19436), (1996, 9718), (3992, 4859)]