81278768

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{298819}}^1$

素因数の和:298844

約数の個数: 20

約数和(自身を含む): 166741560

約数和(自身を除く): 85462792

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 298819, 597638, 1195276, 2390552, 4781104, 5079923, 10159846, 20319692, 40639384, 81278768]

約数ペア:

[(1, 81278768), (2, 40639384), (4, 20319692), (8, 10159846), (16, 5079923), (17, 4781104), (34, 2390552), (68, 1195276), (136, 597638), (272, 298819)]