18147680

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1123}}^1$

素因数の和:1239

約数の個数: 48

約数和(自身を含む): 43336944

約数和(自身を除く): 25189264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1123, 1616, 2020, 2246, 3232, 4040, 4492, 5615, 8080, 8984, 11230, 16160, 17968, 22460, 35936, 44920, 89840, 113423, 179680, 226846, 453692, 567115, 907384, 1134230, 1814768, 2268460, 3629536, 4536920, 9073840, 18147680]

約数ペア:

[(1, 18147680), (2, 9073840), (4, 4536920), (5, 3629536), (8, 2268460), (10, 1814768), (16, 1134230), (20, 907384), (32, 567115), (40, 453692), (80, 226846), (101, 179680), (160, 113423), (202, 89840), (404, 44920), (505, 35936), (808, 22460), (1010, 17968), (1123, 16160), (1616, 11230), (2020, 8984), (2246, 8080), (3232, 5615), (4040, 4492)]