19964416

素因数分解:

$2^9\times {\mathrm{38993}}^1$

素因数の和:39011

約数の個数: 20

約数和(自身を含む): 39890862

約数和(自身を除く): 19926446

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 38993, 77986, 155972, 311944, 623888, 1247776, 2495552, 4991104, 9982208, 19964416]

約数ペア:

[(1, 19964416), (2, 9982208), (4, 4991104), (8, 2495552), (16, 1247776), (32, 623888), (64, 311944), (128, 155972), (256, 77986), (512, 38993)]