21603393

素因数分解:

$3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2503}}^1$

素因数の和:2653

約数の個数: 24

約数和(自身を含む): 35937408

約数和(自身を除く): 14334015

約数列:

[1, 3, 7, 9, 21, 63, 137, 411, 959, 1233, 2503, 2877, 7509, 8631, 17521, 22527, 52563, 157689, 342911, 1028733, 2400377, 3086199, 7201131, 21603393]

約数ペア:

[(1, 21603393), (3, 7201131), (7, 3086199), (9, 2400377), (21, 1028733), (63, 342911), (137, 157689), (411, 52563), (959, 22527), (1233, 17521), (2503, 8631), (2877, 7509)]