28267580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128489}}^1$

素因数の和:128509

約数の個数: 24

約数和(自身を含む): 64758960

約数和(自身を除く): 36491380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 128489, 256978, 513956, 642445, 1284890, 1413379, 2569780, 2826758, 5653516, 7066895, 14133790, 28267580]

約数ペア:

[(1, 28267580), (2, 14133790), (4, 7066895), (5, 5653516), (10, 2826758), (11, 2569780), (20, 1413379), (22, 1284890), (44, 642445), (55, 513956), (110, 256978), (220, 128489)]