21080494053

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{13697527}}^1$

素因数の和:13697558

約数の個数: 20

約数和(自身を含む): 33148017760

約数和(自身を除く): 12067523707

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 13697527, 41092581, 123277743, 260253013, 369833229, 780759039, 1109499687, 2342277117, 7026831351, 21080494053]

約数ペア:

[(1, 21080494053), (3, 7026831351), (9, 2342277117), (19, 1109499687), (27, 780759039), (57, 369833229), (81, 260253013), (171, 123277743), (513, 41092581), (1539, 13697527)]