19997589

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1\times {\mathrm{727}}^1$

素因数の和:956

約数の個数: 16

約数和(自身を含む): 27361152

約数和(自身を除く): 7363563

約数列:

[1, 3, 53, 159, 173, 519, 727, 2181, 9169, 27507, 38531, 115593, 125771, 377313, 6665863, 19997589]

約数ペア:

[(1, 19997589), (3, 6665863), (53, 377313), (159, 125771), (173, 115593), (519, 38531), (727, 27507), (2181, 9169)]