20557437

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{131}}^1\times {\mathrm{181}}^1$

素因数の和:349

約数の個数: 24

約数和(自身を含む): 29501472

約数和(自身を除く): 8944035

約数列:

[1, 3, 17, 51, 131, 181, 289, 393, 543, 867, 2227, 3077, 6681, 9231, 23711, 37859, 52309, 71133, 113577, 156927, 403087, 1209261, 6852479, 20557437]

約数ペア:

[(1, 20557437), (3, 6852479), (17, 1209261), (51, 403087), (131, 156927), (181, 113577), (289, 71133), (393, 52309), (543, 37859), (867, 23711), (2227, 9231), (3077, 6681)]