21550455

素因数分解:

$3^5\times 5^1\times {\mathrm{17737}}^1$

素因数の和:17757

約数の個数: 24

約数和(自身を含む): 38739792

約数和(自身を除く): 17189337

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17737, 53211, 88685, 159633, 266055, 478899, 798165, 1436697, 2394495, 4310091, 7183485, 21550455]

約数ペア:

[(1, 21550455), (3, 7183485), (5, 4310091), (9, 2394495), (15, 1436697), (27, 798165), (45, 478899), (81, 266055), (135, 159633), (243, 88685), (405, 53211), (1215, 17737)]