28201880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2143}}^1$

素因数の和:2208

約数の個数: 64

約数和(自身を含む): 74096640

約数和(自身を除く): 45894760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1316, 1645, 1880, 2143, 2632, 3290, 4286, 6580, 8572, 10715, 13160, 15001, 17144, 21430, 30002, 42860, 60004, 75005, 85720, 100721, 120008, 150010, 201442, 300020, 402884, 503605, 600040, 705047, 805768, 1007210, 1410094, 2014420, 2820188, 3525235, 4028840, 5640376, 7050470, 14100940, 28201880]

約数ペア:

[(1, 28201880), (2, 14100940), (4, 7050470), (5, 5640376), (7, 4028840), (8, 3525235), (10, 2820188), (14, 2014420), (20, 1410094), (28, 1007210), (35, 805768), (40, 705047), (47, 600040), (56, 503605), (70, 402884), (94, 300020), (140, 201442), (188, 150010), (235, 120008), (280, 100721), (329, 85720), (376, 75005), (470, 60004), (658, 42860), (940, 30002), (1316, 21430), (1645, 17144), (1880, 15001), (2143, 13160), (2632, 10715), (3290, 8572), (4286, 6580)]