20791918

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{439}}^1$

素因数の和:664

約数の個数: 32

約数和(自身を含む): 38016000

約数和(自身を除く): 17224082

約数列:

[1, 2, 7, 14, 17, 34, 119, 199, 238, 398, 439, 878, 1393, 2786, 3073, 3383, 6146, 6766, 7463, 14926, 23681, 47362, 52241, 87361, 104482, 174722, 611527, 1223054, 1485137, 2970274, 10395959, 20791918]

約数ペア:

[(1, 20791918), (2, 10395959), (7, 2970274), (14, 1485137), (17, 1223054), (34, 611527), (119, 174722), (199, 104482), (238, 87361), (398, 52241), (439, 47362), (878, 23681), (1393, 14926), (2786, 7463), (3073, 6766), (3383, 6146)]