21282904

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{24407}}^1$

素因数の和:24522

約数の個数: 16

約数和(自身を含む): 40273200

約数和(自身を除く): 18990296

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 24407, 48814, 97628, 195256, 2660363, 5320726, 10641452, 21282904]

約数ペア:

[(1, 21282904), (2, 10641452), (4, 5320726), (8, 2660363), (109, 195256), (218, 97628), (436, 48814), (872, 24407)]