16639792

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{79999}}^1$

素因数の和:80020

約数の個数: 20

約数和(自身を含む): 34720000

約数和(自身を除く): 18080208

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 79999, 159998, 319996, 639992, 1039987, 1279984, 2079974, 4159948, 8319896, 16639792]

約数ペア:

[(1, 16639792), (2, 8319896), (4, 4159948), (8, 2079974), (13, 1279984), (16, 1039987), (26, 639992), (52, 319996), (104, 159998), (208, 79999)]