18288100

素因数分解:

$2^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{919}}^1$

素因数の和:1132

約数の個数: 36

約数和(自身を含む): 39928000

約数和(自身を除く): 21639900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199, 398, 796, 919, 995, 1838, 1990, 3676, 3980, 4595, 4975, 9190, 9950, 18380, 19900, 22975, 45950, 91900, 182881, 365762, 731524, 914405, 1828810, 3657620, 4572025, 9144050, 18288100]

約数ペア:

[(1, 18288100), (2, 9144050), (4, 4572025), (5, 3657620), (10, 1828810), (20, 914405), (25, 731524), (50, 365762), (100, 182881), (199, 91900), (398, 45950), (796, 22975), (919, 19900), (995, 18380), (1838, 9950), (1990, 9190), (3676, 4975), (3980, 4595)]