16891120

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1061}}^1$

素因数の和:1273

約数の個数: 40

約数和(自身を含む): 39506400

約数和(自身を除く): 22615280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1061, 1592, 1990, 2122, 3184, 3980, 4244, 5305, 7960, 8488, 10610, 15920, 16976, 21220, 42440, 84880, 211139, 422278, 844556, 1055695, 1689112, 2111390, 3378224, 4222780, 8445560, 16891120]

約数ペア:

[(1, 16891120), (2, 8445560), (4, 4222780), (5, 3378224), (8, 2111390), (10, 1689112), (16, 1055695), (20, 844556), (40, 422278), (80, 211139), (199, 84880), (398, 42440), (796, 21220), (995, 16976), (1061, 15920), (1592, 10610), (1990, 8488), (2122, 7960), (3184, 5305), (3980, 4244)]