21000681188

素因数分解:

$2^2\times {\mathrm{47}}^1\times {\mathrm{111705751}}^1$

素因数の和:111705802

約数の個数: 12

約数和(自身を含む): 37533132672

約数和(自身を除く): 16532451484

約数列:

[1, 2, 4, 47, 94, 188, 111705751, 223411502, 446823004, 5250170297, 10500340594, 21000681188]

約数ペア:

[(1, 21000681188), (2, 10500340594), (4, 5250170297), (47, 446823004), (94, 223411502), (188, 111705751)]