28635520

素因数分解:

$2^7\times 5^1\times {\mathrm{101}}^1\times {\mathrm{443}}^1$

素因数の和:563

約数の個数: 64

約数和(自身を含む): 69290640

約数和(自身を除く): 40655120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 101, 128, 160, 202, 320, 404, 443, 505, 640, 808, 886, 1010, 1616, 1772, 2020, 2215, 3232, 3544, 4040, 4430, 6464, 7088, 8080, 8860, 12928, 14176, 16160, 17720, 28352, 32320, 35440, 44743, 56704, 64640, 70880, 89486, 141760, 178972, 223715, 283520, 357944, 447430, 715888, 894860, 1431776, 1789720, 2863552, 3579440, 5727104, 7158880, 14317760, 28635520]

約数ペア:

[(1, 28635520), (2, 14317760), (4, 7158880), (5, 5727104), (8, 3579440), (10, 2863552), (16, 1789720), (20, 1431776), (32, 894860), (40, 715888), (64, 447430), (80, 357944), (101, 283520), (128, 223715), (160, 178972), (202, 141760), (320, 89486), (404, 70880), (443, 64640), (505, 56704), (640, 44743), (808, 35440), (886, 32320), (1010, 28352), (1616, 17720), (1772, 16160), (2020, 14176), (2215, 12928), (3232, 8860), (3544, 8080), (4040, 7088), (4430, 6464)]