21204784

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{14891}}^1$

素因数の和:14988

約数の個数: 20

約数和(自身を含む): 41548680

約数和(自身を除く): 20343896

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 14891, 29782, 59564, 119128, 238256, 1325299, 2650598, 5301196, 10602392, 21204784]

約数ペア:

[(1, 21204784), (2, 10602392), (4, 5301196), (8, 2650598), (16, 1325299), (89, 238256), (178, 119128), (356, 59564), (712, 29782), (1424, 14891)]