820399020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{1953331}}^1$

素因数の和:1953350

約数の個数: 48

約数和(自身を含む): 2625278208

約数和(自身を除く): 1804879188

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 1953331, 3906662, 5859993, 7813324, 9766655, 11719986, 13673317, 19533310, 23439972, 27346634, 29299965, 39066620, 41019951, 54693268, 58599930, 68366585, 82039902, 117199860, 136733170, 164079804, 205099755, 273466340, 410199510, 820399020]

約数ペア:

[(1, 820399020), (2, 410199510), (3, 273466340), (4, 205099755), (5, 164079804), (6, 136733170), (7, 117199860), (10, 82039902), (12, 68366585), (14, 58599930), (15, 54693268), (20, 41019951), (21, 39066620), (28, 29299965), (30, 27346634), (35, 23439972), (42, 19533310), (60, 13673317), (70, 11719986), (84, 9766655), (105, 7813324), (140, 5859993), (210, 3906662), (420, 1953331)]