21015550

素因数分解:

$2^1\times 5^2\times {\mathrm{379}}^1\times {\mathrm{1109}}^1$

素因数の和:1500

約数の個数: 24

約数和(自身を含む): 39227400

約数和(自身を除く): 18211850

約数列:

[1, 2, 5, 10, 25, 50, 379, 758, 1109, 1895, 2218, 3790, 5545, 9475, 11090, 18950, 27725, 55450, 420311, 840622, 2101555, 4203110, 10507775, 21015550]

約数ペア:

[(1, 21015550), (2, 10507775), (5, 4203110), (10, 2101555), (25, 840622), (50, 420311), (379, 55450), (758, 27725), (1109, 18950), (1895, 11090), (2218, 9475), (3790, 5545)]