28277505

素因数分解:

$3^4\times 5^1\times {\mathrm{69821}}^1$

素因数の和:69838

約数の個数: 20

約数和(自身を含む): 50690772

約数和(自身を除く): 22413267

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 69821, 209463, 349105, 628389, 1047315, 1885167, 3141945, 5655501, 9425835, 28277505]

約数ペア:

[(1, 28277505), (3, 9425835), (5, 5655501), (9, 3141945), (15, 1885167), (27, 1047315), (45, 628389), (81, 349105), (135, 209463), (405, 69821)]