18639513

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{5737}}^1$

素因数の和:5781

約数の個数: 18

約数和(自身を含む): 28420314

約数和(自身を除く): 9780801

約数列:

[1, 3, 9, 19, 57, 171, 361, 1083, 3249, 5737, 17211, 51633, 109003, 327009, 981027, 2071057, 6213171, 18639513]

約数ペア:

[(1, 18639513), (3, 6213171), (9, 2071057), (19, 981027), (57, 327009), (171, 109003), (361, 51633), (1083, 17211), (3249, 5737)]