21000868

素因数分解:

$2^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{3769}}^1$

素因数の和:3979

約数の個数: 24

約数和(自身を含む): 42224000

約数和(自身を除く): 21223132

約数列:

[1, 2, 4, 7, 14, 28, 199, 398, 796, 1393, 2786, 3769, 5572, 7538, 15076, 26383, 52766, 105532, 750031, 1500062, 3000124, 5250217, 10500434, 21000868]

約数ペア:

[(1, 21000868), (2, 10500434), (4, 5250217), (7, 3000124), (14, 1500062), (28, 750031), (199, 105532), (398, 52766), (796, 26383), (1393, 15076), (2786, 7538), (3769, 5572)]