72981

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:82

約数の個数: 20

約数和(自身を含む): 117612

約数和(自身を除く): 44631

約数列:

[1, 3, 9, 17, 27, 51, 53, 81, 153, 159, 459, 477, 901, 1377, 1431, 2703, 4293, 8109, 24327, 72981]

約数ペア:

[(1, 72981), (3, 24327), (9, 8109), (17, 4293), (27, 2703), (51, 1431), (53, 1377), (81, 901), (153, 477), (159, 459)]