21256448

素因数分解:

$2^8\times {\mathrm{43}}^1\times {\mathrm{1931}}^1$

素因数の和:1990

約数の個数: 36

約数和(自身を含む): 43439088

約数和(自身を除く): 22182640

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 256, 344, 688, 1376, 1931, 2752, 3862, 5504, 7724, 11008, 15448, 30896, 61792, 83033, 123584, 166066, 247168, 332132, 494336, 664264, 1328528, 2657056, 5314112, 10628224, 21256448]

約数ペア:

[(1, 21256448), (2, 10628224), (4, 5314112), (8, 2657056), (16, 1328528), (32, 664264), (43, 494336), (64, 332132), (86, 247168), (128, 166066), (172, 123584), (256, 83033), (344, 61792), (688, 30896), (1376, 15448), (1931, 11008), (2752, 7724), (3862, 5504)]