19988290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{1009}}^1$

素因数の和:1306

約数の個数: 32

約数和(自身を含む): 41304960

約数和(自身を除く): 21316670

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 283, 566, 1009, 1415, 1981, 2018, 2830, 3962, 5045, 7063, 9905, 10090, 14126, 19810, 35315, 70630, 285547, 571094, 1427735, 1998829, 2855470, 3997658, 9994145, 19988290]

約数ペア:

[(1, 19988290), (2, 9994145), (5, 3997658), (7, 2855470), (10, 1998829), (14, 1427735), (35, 571094), (70, 285547), (283, 70630), (566, 35315), (1009, 19810), (1415, 14126), (1981, 10090), (2018, 9905), (2830, 7063), (3962, 5045)]