21057160

素因数分解:

$2^3\times 5^1\times {\mathrm{526429}}^1$

素因数の和:526440

約数の個数: 16

約数和(自身を含む): 47378700

約数和(自身を除く): 26321540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526429, 1052858, 2105716, 2632145, 4211432, 5264290, 10528580, 21057160]

約数ペア:

[(1, 21057160), (2, 10528580), (4, 5264290), (5, 4211432), (8, 2632145), (10, 2105716), (20, 1052858), (40, 526429)]