20999437

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1249}}^1$

素因数の和:1332

約数の個数: 16

約数和(自身を含む): 23760000

約数和(自身を除く): 2760563

約数列:

[1, 17, 23, 43, 391, 731, 989, 1249, 16813, 21233, 28727, 53707, 488359, 913019, 1235261, 20999437]

約数ペア:

[(1, 20999437), (17, 1235261), (23, 913019), (43, 488359), (391, 53707), (731, 28727), (989, 21233), (1249, 16813)]