21790335

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1493}}^1$

素因数の和:1647

約数の個数: 32

約数和(自身を含む): 40158720

約数和(自身を除く): 18368385

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 139, 417, 695, 973, 1493, 2085, 2919, 4479, 4865, 7465, 10451, 14595, 22395, 31353, 52255, 156765, 207527, 622581, 1037635, 1452689, 3112905, 4358067, 7263445, 21790335]

約数ペア:

[(1, 21790335), (3, 7263445), (5, 4358067), (7, 3112905), (15, 1452689), (21, 1037635), (35, 622581), (105, 207527), (139, 156765), (417, 52255), (695, 31353), (973, 22395), (1493, 14595), (2085, 10451), (2919, 7465), (4479, 4865)]