640087320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{51787}}^1$

素因数の和:51904

約数の個数: 64

約数和(自身を含む): 1938942720

約数和(自身を除く): 1298855400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 103, 120, 206, 309, 412, 515, 618, 824, 1030, 1236, 1545, 2060, 2472, 3090, 4120, 6180, 12360, 51787, 103574, 155361, 207148, 258935, 310722, 414296, 517870, 621444, 776805, 1035740, 1242888, 1553610, 2071480, 3107220, 5334061, 6214440, 10668122, 16002183, 21336244, 26670305, 32004366, 42672488, 53340610, 64008732, 80010915, 106681220, 128017464, 160021830, 213362440, 320043660, 640087320]

約数ペア:

[(1, 640087320), (2, 320043660), (3, 213362440), (4, 160021830), (5, 128017464), (6, 106681220), (8, 80010915), (10, 64008732), (12, 53340610), (15, 42672488), (20, 32004366), (24, 26670305), (30, 21336244), (40, 16002183), (60, 10668122), (103, 6214440), (120, 5334061), (206, 3107220), (309, 2071480), (412, 1553610), (515, 1242888), (618, 1035740), (824, 776805), (1030, 621444), (1236, 517870), (1545, 414296), (2060, 310722), (2472, 258935), (3090, 207148), (4120, 155361), (6180, 103574), (12360, 51787)]