639720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{1777}}^1$

素因数の和:1794

約数の個数: 48

約数和(自身を含む): 2080260

約数和(自身を除く): 1440540

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 1777, 3554, 5331, 7108, 8885, 10662, 14216, 15993, 17770, 21324, 26655, 31986, 35540, 42648, 53310, 63972, 71080, 79965, 106620, 127944, 159930, 213240, 319860, 639720]

約数ペア:

[(1, 639720), (2, 319860), (3, 213240), (4, 159930), (5, 127944), (6, 106620), (8, 79965), (9, 71080), (10, 63972), (12, 53310), (15, 42648), (18, 35540), (20, 31986), (24, 26655), (30, 21324), (36, 17770), (40, 15993), (45, 14216), (60, 10662), (72, 8885), (90, 7108), (120, 5331), (180, 3554), (360, 1777)]