640864

素因数分解:

$2^5\times 7^1\times {\mathrm{2861}}^1$

素因数の和:2878

約数の個数: 24

約数和(自身を含む): 1442448

約数和(自身を除く): 801584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 2861, 5722, 11444, 20027, 22888, 40054, 45776, 80108, 91552, 160216, 320432, 640864]

約数ペア:

[(1, 640864), (2, 320432), (4, 160216), (7, 91552), (8, 80108), (14, 45776), (16, 40054), (28, 22888), (32, 20027), (56, 11444), (112, 5722), (224, 2861)]