81951728

素因数分解:

$2^4\times {\mathrm{107}}^1\times {\mathrm{47869}}^1$

素因数の和:47984

約数の個数: 20

約数和(自身を含む): 160268760

約数和(自身を除く): 78317032

約数列:

[1, 2, 4, 8, 16, 107, 214, 428, 856, 1712, 47869, 95738, 191476, 382952, 765904, 5121983, 10243966, 20487932, 40975864, 81951728]

約数ペア:

[(1, 81951728), (2, 40975864), (4, 20487932), (8, 10243966), (16, 5121983), (107, 765904), (214, 382952), (428, 191476), (856, 95738), (1712, 47869)]