21653247

素因数分解:

$3^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{1913}}^1$

素因数の和:1948

約数の個数: 32

約数和(自身を含む): 36748800

約数和(自身を除く): 15095553

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 343, 539, 1029, 1617, 1913, 3773, 5739, 11319, 13391, 21043, 40173, 63129, 93737, 147301, 281211, 441903, 656159, 1031107, 1968477, 3093321, 7217749, 21653247]

約数ペア:

[(1, 21653247), (3, 7217749), (7, 3093321), (11, 1968477), (21, 1031107), (33, 656159), (49, 441903), (77, 281211), (147, 147301), (231, 93737), (343, 63129), (539, 40173), (1029, 21043), (1617, 13391), (1913, 11319), (3773, 5739)]