399780

素因数分解:

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

素因数の和:2236

約数の個数: 36

約数和(自身を含む): 1213212

約数和(自身を除く): 813432

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 2221, 4442, 6663, 8884, 11105, 13326, 19989, 22210, 26652, 33315, 39978, 44420, 66630, 79956, 99945, 133260, 199890, 399780]

約数ペア:

[(1, 399780), (2, 199890), (3, 133260), (4, 99945), (5, 79956), (6, 66630), (9, 44420), (10, 39978), (12, 33315), (15, 26652), (18, 22210), (20, 19989), (30, 13326), (36, 11105), (45, 8884), (60, 6663), (90, 4442), (180, 2221)]