840280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{3001}}^1$

素因数の和:3019

約数の個数: 32

約数和(自身を含む): 2161440

約数和(自身を除く): 1321160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 3001, 6002, 12004, 15005, 21007, 24008, 30010, 42014, 60020, 84028, 105035, 120040, 168056, 210070, 420140, 840280]

約数ペア:

[(1, 840280), (2, 420140), (4, 210070), (5, 168056), (7, 120040), (8, 105035), (10, 84028), (14, 60020), (20, 42014), (28, 30010), (35, 24008), (40, 21007), (56, 15005), (70, 12004), (140, 6002), (280, 3001)]