20818340

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{3347}}^1$

素因数の和:3667

約数の個数: 24

約数和(自身を含む): 43872192

約数和(自身を除く): 23053852

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3110, 3347, 6220, 6694, 13388, 16735, 33470, 66940, 1040917, 2081834, 4163668, 5204585, 10409170, 20818340]

約数ペア:

[(1, 20818340), (2, 10409170), (4, 5204585), (5, 4163668), (10, 2081834), (20, 1040917), (311, 66940), (622, 33470), (1244, 16735), (1555, 13388), (3110, 6694), (3347, 6220)]