20665105

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1\times {\mathrm{271}}^1$

素因数の和:528

約数の個数: 16

約数和(自身を含む): 25302528

約数和(自身を除く): 4637423

約数列:

[1, 5, 101, 151, 271, 505, 755, 1355, 15251, 27371, 40921, 76255, 136855, 204605, 4133021, 20665105]

約数ペア:

[(1, 20665105), (5, 4133021), (101, 204605), (151, 136855), (271, 76255), (505, 40921), (755, 27371), (1355, 15251)]