18939694

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1$

素因数の和:304

約数の個数: 32

約数和(自身を含む): 31236480

約数和(自身を除く): 12296786

約数列:

[1, 2, 19, 38, 43, 67, 86, 134, 173, 346, 817, 1273, 1634, 2546, 2881, 3287, 5762, 6574, 7439, 11591, 14878, 23182, 54739, 109478, 141341, 220229, 282682, 440458, 498413, 996826, 9469847, 18939694]

約数ペア:

[(1, 18939694), (2, 9469847), (19, 996826), (38, 498413), (43, 440458), (67, 282682), (86, 220229), (134, 141341), (173, 109478), (346, 54739), (817, 23182), (1273, 14878), (1634, 11591), (2546, 7439), (2881, 6574), (3287, 5762)]