1998900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{2221}}^1$

素因数の和:2241

約数の個数: 54

約数和(自身を含む): 6268262

約数和(自身を除く): 4269362

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 180, 225, 300, 450, 900, 2221, 4442, 6663, 8884, 11105, 13326, 19989, 22210, 26652, 33315, 39978, 44420, 55525, 66630, 79956, 99945, 111050, 133260, 166575, 199890, 222100, 333150, 399780, 499725, 666300, 999450, 1998900]

約数ペア:

[(1, 1998900), (2, 999450), (3, 666300), (4, 499725), (5, 399780), (6, 333150), (9, 222100), (10, 199890), (12, 166575), (15, 133260), (18, 111050), (20, 99945), (25, 79956), (30, 66630), (36, 55525), (45, 44420), (50, 39978), (60, 33315), (75, 26652), (90, 22210), (100, 19989), (150, 13326), (180, 11105), (225, 8884), (300, 6663), (450, 4442), (900, 2221)]