21088750

素因数分解:

$2^1\times 5^4\times {\mathrm{16871}}^1$

素因数の和:16893

約数の個数: 20

約数和(自身を含む): 39531096

約数和(自身を除く): 18442346

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 16871, 33742, 84355, 168710, 421775, 843550, 2108875, 4217750, 10544375, 21088750]

約数ペア:

[(1, 21088750), (2, 10544375), (5, 4217750), (10, 2108875), (25, 843550), (50, 421775), (125, 168710), (250, 84355), (625, 33742), (1250, 16871)]