21352550

素因数分解:

$2^1\times 5^2\times {\mathrm{509}}^1\times {\mathrm{839}}^1$

素因数の和:1360

約数の個数: 24

約数和(自身を含む): 39841200

約数和(自身を除く): 18488650

約数列:

[1, 2, 5, 10, 25, 50, 509, 839, 1018, 1678, 2545, 4195, 5090, 8390, 12725, 20975, 25450, 41950, 427051, 854102, 2135255, 4270510, 10676275, 21352550]

約数ペア:

[(1, 21352550), (2, 10676275), (5, 4270510), (10, 2135255), (25, 854102), (50, 427051), (509, 41950), (839, 25450), (1018, 20975), (1678, 12725), (2545, 8390), (4195, 5090)]