28105515

素因数分解:

$3^3\times 5^1\times {\mathrm{208189}}^1$

素因数の和:208203

約数の個数: 16

約数和(自身を含む): 49965600

約数和(自身を除く): 21860085

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 208189, 624567, 1040945, 1873701, 3122835, 5621103, 9368505, 28105515]

約数ペア:

[(1, 28105515), (3, 9368505), (5, 5621103), (9, 3122835), (15, 1873701), (27, 1040945), (45, 624567), (135, 208189)]