21059659971

素因数分解:

$3^2\times 7^2\times {\mathrm{3023}}^1\times {\mathrm{15797}}^1$

素因数の和:18840

約数の個数: 36

約数和(自身を含む): 35399905632

約数和(自身を除く): 14340245661

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 3023, 9069, 15797, 21161, 27207, 47391, 63483, 110579, 142173, 148127, 190449, 331737, 444381, 774053, 995211, 1333143, 2322159, 6966477, 47754331, 143262993, 334280317, 429788979, 1002840951, 2339962219, 3008522853, 7019886657, 21059659971]

約数ペア:

[(1, 21059659971), (3, 7019886657), (7, 3008522853), (9, 2339962219), (21, 1002840951), (49, 429788979), (63, 334280317), (147, 143262993), (441, 47754331), (3023, 6966477), (9069, 2322159), (15797, 1333143), (21161, 995211), (27207, 774053), (47391, 444381), (63483, 331737), (110579, 190449), (142173, 148127)]