17917960

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2251}}^1$

素因数の和:2461

約数の個数: 32

約数和(自身を含む): 40536000

約数和(自身を除く): 22618040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 2251, 3980, 4502, 7960, 9004, 11255, 18008, 22510, 45020, 90040, 447949, 895898, 1791796, 2239745, 3583592, 4479490, 8958980, 17917960]

約数ペア:

[(1, 17917960), (2, 8958980), (4, 4479490), (5, 3583592), (8, 2239745), (10, 1791796), (20, 895898), (40, 447949), (199, 90040), (398, 45020), (796, 22510), (995, 18008), (1592, 11255), (1990, 9004), (2251, 7960), (3980, 4502)]