19995513

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1\times {\mathrm{653}}^1$

素因数の和:888

約数の個数: 16

約数和(自身を含む): 27311040

約数和(自身を除く): 7315527

約数列:

[1, 3, 59, 173, 177, 519, 653, 1959, 10207, 30621, 38527, 112969, 115581, 338907, 6665171, 19995513]

約数ペア:

[(1, 19995513), (3, 6665171), (59, 338907), (173, 115581), (177, 112969), (519, 38527), (653, 30621), (1959, 10207)]