19989263

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:323

約数の個数: 24

約数和(自身を含む): 24962784

約数和(自身を除く): 4973521

約数列:

[1, 7, 17, 41, 119, 241, 287, 289, 697, 1687, 2023, 4097, 4879, 9881, 11849, 28679, 69167, 69649, 82943, 167977, 487543, 1175839, 2855609, 19989263]

約数ペア:

[(1, 19989263), (7, 2855609), (17, 1175839), (41, 487543), (119, 167977), (241, 82943), (287, 69649), (289, 69167), (697, 28679), (1687, 11849), (2023, 9881), (4097, 4879)]