21552040

素因数分解:

$2^3\times 5^1\times {\mathrm{538801}}^1$

素因数の和:538812

約数の個数: 16

約数和(自身を含む): 48492180

約数和(自身を除く): 26940140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 538801, 1077602, 2155204, 2694005, 4310408, 5388010, 10776020, 21552040]

約数ペア:

[(1, 21552040), (2, 10776020), (4, 5388010), (5, 4310408), (8, 2694005), (10, 2155204), (20, 1077602), (40, 538801)]