28368880

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3511}}^1$

素因数の和:3625

約数の個数: 40

約数和(自身を含む): 66629664

約数和(自身を除く): 38260784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 3511, 4040, 7022, 8080, 14044, 17555, 28088, 35110, 56176, 70220, 140440, 280880, 354611, 709222, 1418444, 1773055, 2836888, 3546110, 5673776, 7092220, 14184440, 28368880]

約数ペア:

[(1, 28368880), (2, 14184440), (4, 7092220), (5, 5673776), (8, 3546110), (10, 2836888), (16, 1773055), (20, 1418444), (40, 709222), (80, 354611), (101, 280880), (202, 140440), (404, 70220), (505, 56176), (808, 35110), (1010, 28088), (1616, 17555), (2020, 14044), (3511, 8080), (4040, 7022)]