21251675

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{373}}^1$

素因数の和:479

約数の個数: 24

約数和(自身を含む): 27547344

約数和(自身を除く): 6295669

約数列:

[1, 5, 25, 43, 53, 215, 265, 373, 1075, 1325, 1865, 2279, 9325, 11395, 16039, 19769, 56975, 80195, 98845, 400975, 494225, 850067, 4250335, 21251675]

約数ペア:

[(1, 21251675), (5, 4250335), (25, 850067), (43, 494225), (53, 400975), (215, 98845), (265, 80195), (373, 56975), (1075, 19769), (1325, 16039), (1865, 11395), (2279, 9325)]