19990090

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{105211}}^1$

素因数の和:105237

約数の個数: 16

約数和(自身を含む): 37876320

約数和(自身を除く): 17886230

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 105211, 210422, 526055, 1052110, 1999009, 3998018, 9995045, 19990090]

約数ペア:

[(1, 19990090), (2, 9995045), (5, 3998018), (10, 1999009), (19, 1052110), (38, 526055), (95, 210422), (190, 105211)]