19881328

素因数分解:

$2^4\times {\mathrm{457}}^1\times {\mathrm{2719}}^1$

素因数の和:3184

約数の個数: 20

約数和(自身を含む): 38618560

約数和(自身を除く): 18737232

約数列:

[1, 2, 4, 8, 16, 457, 914, 1828, 2719, 3656, 5438, 7312, 10876, 21752, 43504, 1242583, 2485166, 4970332, 9940664, 19881328]

約数ペア:

[(1, 19881328), (2, 9940664), (4, 4970332), (8, 2485166), (16, 1242583), (457, 43504), (914, 21752), (1828, 10876), (2719, 7312), (3656, 5438)]