20859453

素因数分解:

$3^2\times {\mathrm{37}}^2\times {\mathrm{1693}}^1$

素因数の和:1773

約数の個数: 18

約数和(自身を含む): 30984954

約数和(自身を除く): 10125501

約数列:

[1, 3, 9, 37, 111, 333, 1369, 1693, 4107, 5079, 12321, 15237, 62641, 187923, 563769, 2317717, 6953151, 20859453]

約数ペア:

[(1, 20859453), (3, 6953151), (9, 2317717), (37, 563769), (111, 187923), (333, 62641), (1369, 15237), (1693, 12321), (4107, 5079)]