19999431

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{653}}^1$

素因数の和:783

約数の個数: 24

約数和(自身を含む): 29995056

約数和(自身を除く): 9995625

約数列:

[1, 3, 9, 41, 83, 123, 249, 369, 653, 747, 1959, 3403, 5877, 10209, 26773, 30627, 54199, 80319, 162597, 240957, 487791, 2222159, 6666477, 19999431]

約数ペア:

[(1, 19999431), (3, 6666477), (9, 2222159), (41, 487791), (83, 240957), (123, 162597), (249, 80319), (369, 54199), (653, 30627), (747, 26773), (1959, 10209), (3403, 5877)]