19987886

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{30941}}^1$

素因数の和:30979

約数の個数: 16

約数和(自身を含む): 33417360

約数和(自身を除く): 13429474

約数列:

[1, 2, 17, 19, 34, 38, 323, 646, 30941, 61882, 525997, 587879, 1051994, 1175758, 9993943, 19987886]

約数ペア:

[(1, 19987886), (2, 9993943), (17, 1175758), (19, 1051994), (34, 587879), (38, 525997), (323, 61882), (646, 30941)]