21056600

素因数分解:

$2^3\times 5^2\times {\mathrm{127}}^1\times {\mathrm{829}}^1$

素因数の和:972

約数の個数: 48

約数和(自身を含む): 49401600

約数和(自身を除く): 28345000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 127, 200, 254, 508, 635, 829, 1016, 1270, 1658, 2540, 3175, 3316, 4145, 5080, 6350, 6632, 8290, 12700, 16580, 20725, 25400, 33160, 41450, 82900, 105283, 165800, 210566, 421132, 526415, 842264, 1052830, 2105660, 2632075, 4211320, 5264150, 10528300, 21056600]

約数ペア:

[(1, 21056600), (2, 10528300), (4, 5264150), (5, 4211320), (8, 2632075), (10, 2105660), (20, 1052830), (25, 842264), (40, 526415), (50, 421132), (100, 210566), (127, 165800), (200, 105283), (254, 82900), (508, 41450), (635, 33160), (829, 25400), (1016, 20725), (1270, 16580), (1658, 12700), (2540, 8290), (3175, 6632), (3316, 6350), (4145, 5080)]