21027800

素因数分解:

$2^3\times 5^2\times {\mathrm{47}}^1\times {\mathrm{2237}}^1$

素因数の和:2300

約数の個数: 48

約数和(自身を含む): 49952160

約数和(自身を除く): 28924360

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 47, 50, 94, 100, 188, 200, 235, 376, 470, 940, 1175, 1880, 2237, 2350, 4474, 4700, 8948, 9400, 11185, 17896, 22370, 44740, 55925, 89480, 105139, 111850, 210278, 223700, 420556, 447400, 525695, 841112, 1051390, 2102780, 2628475, 4205560, 5256950, 10513900, 21027800]

約数ペア:

[(1, 21027800), (2, 10513900), (4, 5256950), (5, 4205560), (8, 2628475), (10, 2102780), (20, 1051390), (25, 841112), (40, 525695), (47, 447400), (50, 420556), (94, 223700), (100, 210278), (188, 111850), (200, 105139), (235, 89480), (376, 55925), (470, 44740), (940, 22370), (1175, 17896), (1880, 11185), (2237, 9400), (2350, 8948), (4474, 4700)]