21267500

素因数分解:

$2^2\times 5^4\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:252

約数の個数: 60

約数和(自身を含む): 47759712

約数和(自身を除く): 26492212

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 125, 181, 188, 235, 250, 362, 470, 500, 625, 724, 905, 940, 1175, 1250, 1810, 2350, 2500, 3620, 4525, 4700, 5875, 8507, 9050, 11750, 17014, 18100, 22625, 23500, 29375, 34028, 42535, 45250, 58750, 85070, 90500, 113125, 117500, 170140, 212675, 226250, 425350, 452500, 850700, 1063375, 2126750, 4253500, 5316875, 10633750, 21267500]

約数ペア:

[(1, 21267500), (2, 10633750), (4, 5316875), (5, 4253500), (10, 2126750), (20, 1063375), (25, 850700), (47, 452500), (50, 425350), (94, 226250), (100, 212675), (125, 170140), (181, 117500), (188, 113125), (235, 90500), (250, 85070), (362, 58750), (470, 45250), (500, 42535), (625, 34028), (724, 29375), (905, 23500), (940, 22625), (1175, 18100), (1250, 17014), (1810, 11750), (2350, 9050), (2500, 8507), (3620, 5875), (4525, 4700)]