21979450

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{10223}}^1$

素因数の和:10278

約数の個数: 24

約数和(自身を含む): 41836608

約数和(自身を除く): 19857158

約数列:

[1, 2, 5, 10, 25, 43, 50, 86, 215, 430, 1075, 2150, 10223, 20446, 51115, 102230, 255575, 439589, 511150, 879178, 2197945, 4395890, 10989725, 21979450]

約数ペア:

[(1, 21979450), (2, 10989725), (5, 4395890), (10, 2197945), (25, 879178), (43, 511150), (50, 439589), (86, 255575), (215, 102230), (430, 51115), (1075, 20446), (2150, 10223)]