21747988

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{1381}}^1$

素因数の和:1543

約数の個数: 24

約数和(自身を含む): 39624704

約数和(自身を除く): 17876716

約数列:

[1, 2, 4, 31, 62, 124, 127, 254, 508, 1381, 2762, 3937, 5524, 7874, 15748, 42811, 85622, 171244, 175387, 350774, 701548, 5436997, 10873994, 21747988]

約数ペア:

[(1, 21747988), (2, 10873994), (4, 5436997), (31, 701548), (62, 350774), (124, 175387), (127, 171244), (254, 85622), (508, 42811), (1381, 15748), (2762, 7874), (3937, 5524)]