31321971

素因数分解:

$3^5\times {\mathrm{157}}^1\times {\mathrm{821}}^1$

素因数の和:993

約数の個数: 24

約数和(自身を含む): 47274864

約数和(自身を除く): 15952893

約数列:

[1, 3, 9, 27, 81, 157, 243, 471, 821, 1413, 2463, 4239, 7389, 12717, 22167, 38151, 66501, 128897, 199503, 386691, 1160073, 3480219, 10440657, 31321971]

約数ペア:

[(1, 31321971), (3, 10440657), (9, 3480219), (27, 1160073), (81, 386691), (157, 199503), (243, 128897), (471, 66501), (821, 38151), (1413, 22167), (2463, 12717), (4239, 7389)]