7400391280

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^1\times {\mathrm{188401}}^1$

素因数の和:188905

約数の個数: 40

約数和(自身を含む): 17241043824

約数和(自身を除く): 9840652544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 982, 1964, 2455, 3928, 4910, 7856, 9820, 19640, 39280, 188401, 376802, 753604, 942005, 1507208, 1884010, 3014416, 3768020, 7536040, 15072080, 92504891, 185009782, 370019564, 462524455, 740039128, 925048910, 1480078256, 1850097820, 3700195640, 7400391280]

約数ペア:

[(1, 7400391280), (2, 3700195640), (4, 1850097820), (5, 1480078256), (8, 925048910), (10, 740039128), (16, 462524455), (20, 370019564), (40, 185009782), (80, 92504891), (491, 15072080), (982, 7536040), (1964, 3768020), (2455, 3014416), (3928, 1884010), (4910, 1507208), (7856, 942005), (9820, 753604), (19640, 376802), (39280, 188401)]