21131265

素因数分解:

$3^1\times 5^1\times {\mathrm{439}}^1\times {\mathrm{3209}}^1$

素因数の和:3656

約数の個数: 16

約数和(自身を含む): 33897600

約数和(自身を除く): 12766335

約数列:

[1, 3, 5, 15, 439, 1317, 2195, 3209, 6585, 9627, 16045, 48135, 1408751, 4226253, 7043755, 21131265]

約数ペア:

[(1, 21131265), (3, 7043755), (5, 4226253), (15, 1408751), (439, 48135), (1317, 16045), (2195, 9627), (3209, 6585)]