20908105

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{3137}}^1$

素因数の和:3216

約数の個数: 16

約数和(自身を含む): 26509824

約数和(自身を除く): 5601719

約数列:

[1, 5, 31, 43, 155, 215, 1333, 3137, 6665, 15685, 97247, 134891, 486235, 674455, 4181621, 20908105]

約数ペア:

[(1, 20908105), (5, 4181621), (31, 674455), (43, 486235), (155, 134891), (215, 97247), (1333, 15685), (3137, 6665)]