20961495

素因数分解:

$3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1949}}^1$

素因数の和:2199

約数の個数: 24

約数和(自身を含む): 36504000

約数和(自身を除く): 15542505

約数列:

[1, 3, 5, 9, 15, 45, 239, 717, 1195, 1949, 2151, 3585, 5847, 9745, 10755, 17541, 29235, 87705, 465811, 1397433, 2329055, 4192299, 6987165, 20961495]

約数ペア:

[(1, 20961495), (3, 6987165), (5, 4192299), (9, 2329055), (15, 1397433), (45, 465811), (239, 87705), (717, 29235), (1195, 17541), (1949, 10755), (2151, 9745), (3585, 5847)]