21057896

素因数分解:

$2^3\times {\mathrm{251}}^1\times {\mathrm{10487}}^1$

素因数の和:10744

約数の個数: 16

約数和(自身を含む): 39644640

約数和(自身を除く): 18586744

約数列:

[1, 2, 4, 8, 251, 502, 1004, 2008, 10487, 20974, 41948, 83896, 2632237, 5264474, 10528948, 21057896]

約数ペア:

[(1, 21057896), (2, 10528948), (4, 5264474), (8, 2632237), (251, 83896), (502, 41948), (1004, 20974), (2008, 10487)]