18887870

素因数分解:

$2^1\times 5^1\times {\mathrm{557}}^1\times {\mathrm{3391}}^1$

素因数の和:3955

約数の個数: 16

約数和(自身を含む): 34069248

約数和(自身を除く): 15181378

約数列:

[1, 2, 5, 10, 557, 1114, 2785, 3391, 5570, 6782, 16955, 33910, 1888787, 3777574, 9443935, 18887870]

約数ペア:

[(1, 18887870), (2, 9443935), (5, 3777574), (10, 1888787), (557, 33910), (1114, 16955), (2785, 6782), (3391, 5570)]