180040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{643}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 463680

約数和(自身を除く): 283640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 643, 1286, 2572, 3215, 4501, 5144, 6430, 9002, 12860, 18004, 22505, 25720, 36008, 45010, 90020, 180040]

約数ペア:

[(1, 180040), (2, 90020), (4, 45010), (5, 36008), (7, 25720), (8, 22505), (10, 18004), (14, 12860), (20, 9002), (28, 6430), (35, 5144), (40, 4501), (56, 3215), (70, 2572), (140, 1286), (280, 643)]