20911365

素因数分解:

$3^6\times 5^1\times {\mathrm{5737}}^1$

素因数の和:5760

約数の個数: 28

約数和(自身を含む): 37629804

約数和(自身を除く): 16718439

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 5737, 17211, 28685, 51633, 86055, 154899, 258165, 464697, 774495, 1394091, 2323485, 4182273, 6970455, 20911365]

約数ペア:

[(1, 20911365), (3, 6970455), (5, 4182273), (9, 2323485), (15, 1394091), (27, 774495), (45, 464697), (81, 258165), (135, 154899), (243, 86055), (405, 51633), (729, 28685), (1215, 17211), (3645, 5737)]