20871736

素因数分解:

$2^3\times {\mathrm{661}}^1\times {\mathrm{3947}}^1$

素因数の和:4614

約数の個数: 16

約数和(自身を含む): 39203640

約数和(自身を除く): 18331904

約数列:

[1, 2, 4, 8, 661, 1322, 2644, 3947, 5288, 7894, 15788, 31576, 2608967, 5217934, 10435868, 20871736]

約数ペア:

[(1, 20871736), (2, 10435868), (4, 5217934), (8, 2608967), (661, 31576), (1322, 15788), (2644, 7894), (3947, 5288)]