21439485

素因数分解:

$3^4\times 5^1\times {\mathrm{52937}}^1$

素因数の和:52954

約数の個数: 20

約数和(自身を含む): 38432988

約数和(自身を除く): 16993503

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 52937, 158811, 264685, 476433, 794055, 1429299, 2382165, 4287897, 7146495, 21439485]

約数ペア:

[(1, 21439485), (3, 7146495), (5, 4287897), (9, 2382165), (15, 1429299), (27, 794055), (45, 476433), (81, 264685), (135, 158811), (405, 52937)]