31280985

素因数分解:

$3^4\times 5^1\times {\mathrm{77237}}^1$

素因数の和:77254

約数の個数: 20

約数和(自身を含む): 56074788

約数和(自身を除く): 24793803

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 77237, 231711, 386185, 695133, 1158555, 2085399, 3475665, 6256197, 10426995, 31280985]

約数ペア:

[(1, 31280985), (3, 10426995), (5, 6256197), (9, 3475665), (15, 2085399), (27, 1158555), (45, 695133), (81, 386185), (135, 231711), (405, 77237)]