81445105

素因数分解:

$5^1\times 7^2\times {\mathrm{401}}^1\times {\mathrm{829}}^1$

素因数の和:1249

約数の個数: 24

約数和(自身を含む): 114111720

約数和(自身を除く): 32666615

約数列:

[1, 5, 7, 35, 49, 245, 401, 829, 2005, 2807, 4145, 5803, 14035, 19649, 29015, 40621, 98245, 203105, 332429, 1662145, 2327003, 11635015, 16289021, 81445105]

約数ペア:

[(1, 81445105), (5, 16289021), (7, 11635015), (35, 2327003), (49, 1662145), (245, 332429), (401, 203105), (829, 98245), (2005, 40621), (2807, 29015), (4145, 19649), (5803, 14035)]