201728961

素因数分解:

$3^4\times 7^1\times {\mathrm{355783}}^1$

素因数の和:355802

約数の個数: 20

約数和(自身を含む): 344398912

約数和(自身を除く): 142669951

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 355783, 1067349, 2490481, 3202047, 7471443, 9606141, 22414329, 28818423, 67242987, 201728961]

約数ペア:

[(1, 201728961), (3, 67242987), (7, 28818423), (9, 22414329), (21, 9606141), (27, 7471443), (63, 3202047), (81, 2490481), (189, 1067349), (567, 355783)]