21555128

素因数分解:

$2^3\times 7^1\times {\mathrm{384913}}^1$

素因数の和:384926

約数の個数: 16

約数和(自身を含む): 46189680

約数和(自身を除く): 24634552

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 384913, 769826, 1539652, 2694391, 3079304, 5388782, 10777564, 21555128]

約数ペア:

[(1, 21555128), (2, 10777564), (4, 5388782), (7, 3079304), (8, 2694391), (14, 1539652), (28, 769826), (56, 384913)]