18816219

素因数分解:

$3^6\times {\mathrm{53}}^1\times {\mathrm{487}}^1$

素因数の和:558

約数の個数: 28

約数和(自身を含む): 28802736

約数和(自身を除く): 9986517

約数列:

[1, 3, 9, 27, 53, 81, 159, 243, 477, 487, 729, 1431, 1461, 4293, 4383, 12879, 13149, 25811, 38637, 39447, 77433, 118341, 232299, 355023, 696897, 2090691, 6272073, 18816219]

約数ペア:

[(1, 18816219), (3, 6272073), (9, 2090691), (27, 696897), (53, 355023), (81, 232299), (159, 118341), (243, 77433), (477, 39447), (487, 38637), (729, 25811), (1431, 13149), (1461, 12879), (4293, 4383)]