2015819991

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{28001}}^1$

素因数の和:28447

約数の個数: 24

約数和(自身を含む): 3072379440

約数和(自身を除く): 1056559449

約数列:

[1, 3, 9, 19, 57, 171, 421, 1263, 3789, 7999, 23997, 28001, 71991, 84003, 252009, 532019, 1596057, 4788171, 11788421, 35365263, 106095789, 223979999, 671939997, 2015819991]

約数ペア:

[(1, 2015819991), (3, 671939997), (9, 223979999), (19, 106095789), (57, 35365263), (171, 11788421), (421, 4788171), (1263, 1596057), (3789, 532019), (7999, 252009), (23997, 84003), (28001, 71991)]