19999128

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{19379}}^1$

素因数の和:19431

約数の個数: 32

約数和(自身を含む): 51163200

約数和(自身を除く): 31164072

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 129, 172, 258, 344, 516, 1032, 19379, 38758, 58137, 77516, 116274, 155032, 232548, 465096, 833297, 1666594, 2499891, 3333188, 4999782, 6666376, 9999564, 19999128]

約数ペア:

[(1, 19999128), (2, 9999564), (3, 6666376), (4, 4999782), (6, 3333188), (8, 2499891), (12, 1666594), (24, 833297), (43, 465096), (86, 232548), (129, 155032), (172, 116274), (258, 77516), (344, 58137), (516, 38758), (1032, 19379)]