20891265

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{29633}}^1$

素因数の和:29688

約数の個数: 16

約数和(自身を含む): 34138368

約数和(自身を除く): 13247103

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 29633, 88899, 148165, 444495, 1392751, 4178253, 6963755, 20891265]

約数ペア:

[(1, 20891265), (3, 6963755), (5, 4178253), (15, 1392751), (47, 444495), (141, 148165), (235, 88899), (705, 29633)]