721143

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{307}}^1$

素因数の和:348

約数の個数: 20

約数和(自身を含む): 1118040

約数和(自身を除く): 396897

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 307, 783, 921, 2349, 2763, 8289, 8903, 24867, 26709, 80127, 240381, 721143]

約数ペア:

[(1, 721143), (3, 240381), (9, 80127), (27, 26709), (29, 24867), (81, 8903), (87, 8289), (261, 2763), (307, 2349), (783, 921)]