18871021

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{449}}^1$

素因数の和:576

約数の個数: 16

約数和(自身を含む): 21092400

約数和(自身を除く): 2221379

約数列:

[1, 13, 53, 61, 449, 689, 793, 3233, 5837, 23797, 27389, 42029, 309361, 356057, 1451617, 18871021]

約数ペア:

[(1, 18871021), (13, 1451617), (53, 356057), (61, 309361), (449, 42029), (689, 27389), (793, 23797), (3233, 5837)]