21577995

素因数分解:

$3^4\times 5^1\times {\mathrm{53279}}^1$

素因数の和:53296

約数の個数: 20

約数和(自身を含む): 38681280

約数和(自身を除く): 17103285

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53279, 159837, 266395, 479511, 799185, 1438533, 2397555, 4315599, 7192665, 21577995]

約数ペア:

[(1, 21577995), (3, 7192665), (5, 4315599), (9, 2397555), (15, 1438533), (27, 799185), (45, 479511), (81, 266395), (135, 159837), (405, 53279)]