21167019991

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{320329}}^1$

素因数の和:320395

約数の個数: 24

約数和(自身を含む): 25324008480

約数和(自身を除く): 4156988489

約数列:

[1, 13, 17, 23, 169, 221, 299, 391, 2873, 3887, 5083, 66079, 320329, 4164277, 5445593, 7367567, 54135601, 70792709, 95778371, 125248639, 920305217, 1245118823, 1628232307, 21167019991]

約数ペア:

[(1, 21167019991), (13, 1628232307), (17, 1245118823), (23, 920305217), (169, 125248639), (221, 95778371), (299, 70792709), (391, 54135601), (2873, 7367567), (3887, 5445593), (5083, 4164277), (66079, 320329)]