21000718551

素因数分解:

$3^1\times {\mathrm{199}}^1\times {\mathrm{241}}^1\times {\mathrm{145963}}^1$

素因数の和:146406

約数の個数: 16

約数和(自身を含む): 28258630400

約数和(自身を除く): 7257911849

約数列:

[1, 3, 199, 241, 597, 723, 47959, 143877, 145963, 437889, 29046637, 35177083, 87139911, 105531249, 7000239517, 21000718551]

約数ペア:

[(1, 21000718551), (3, 7000239517), (199, 105531249), (241, 87139911), (597, 35177083), (723, 29046637), (47959, 437889), (143877, 145963)]