19984887

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{18979}}^1$

素因数の和:19004

約数の個数: 20

約数和(自身を含む): 32152120

約数和(自身を除く): 12167233

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 18979, 56937, 170811, 246727, 512433, 740181, 1537299, 2220543, 6661629, 19984887]

約数ペア:

[(1, 19984887), (3, 6661629), (9, 2220543), (13, 1537299), (27, 740181), (39, 512433), (81, 246727), (117, 170811), (351, 56937), (1053, 18979)]