21521595

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{1493}}^1$

素因数の和:1563

約数の個数: 24

約数和(自身を含む): 35605008

約数和(自身を除く): 14083413

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 961, 1493, 2883, 4479, 4805, 7465, 14415, 22395, 46283, 138849, 231415, 694245, 1434773, 4304319, 7173865, 21521595]

約数ペア:

[(1, 21521595), (3, 7173865), (5, 4304319), (15, 1434773), (31, 694245), (93, 231415), (155, 138849), (465, 46283), (961, 22395), (1493, 14415), (2883, 7465), (4479, 4805)]