19972863

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{479}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 29877120

約数和(自身を除く): 9904257

約数列:

[1, 3, 9, 41, 113, 123, 339, 369, 479, 1017, 1437, 4311, 4633, 13899, 19639, 41697, 54127, 58917, 162381, 176751, 487143, 2219207, 6657621, 19972863]

約数ペア:

[(1, 19972863), (3, 6657621), (9, 2219207), (41, 487143), (113, 176751), (123, 162381), (339, 58917), (369, 54127), (479, 41697), (1017, 19639), (1437, 13899), (4311, 4633)]