18741955

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1\times {\mathrm{461}}^1$

素因数の和:686

約数の個数: 16

約数和(自身を含む): 23151744

約数和(自身を除く): 4409789

約数列:

[1, 5, 47, 173, 235, 461, 865, 2305, 8131, 21667, 40655, 79753, 108335, 398765, 3748391, 18741955]

約数ペア:

[(1, 18741955), (5, 3748391), (47, 398765), (173, 108335), (235, 79753), (461, 40655), (865, 21667), (2305, 8131)]