20952405

素因数分解:

$3^3\times 5^1\times {\mathrm{155203}}^1$

素因数の和:155217

約数の個数: 16

約数和(自身を含む): 37248960

約数和(自身を除く): 16296555

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 155203, 465609, 776015, 1396827, 2328045, 4190481, 6984135, 20952405]

約数ペア:

[(1, 20952405), (3, 6984135), (5, 4190481), (9, 2328045), (15, 1396827), (27, 776015), (45, 465609), (135, 155203)]