27787455

素因数分解:

$3^4\times 5^1\times {\mathrm{68611}}^1$

素因数の和:68628

約数の個数: 20

約数和(自身を含む): 49812312

約数和(自身を除く): 22024857

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 68611, 205833, 343055, 617499, 1029165, 1852497, 3087495, 5557491, 9262485, 27787455]

約数ペア:

[(1, 27787455), (3, 9262485), (5, 5557491), (9, 3087495), (15, 1852497), (27, 1029165), (45, 617499), (81, 343055), (135, 205833), (405, 68611)]