21013820

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5501}}^1$

素因数の和:5701

約数の個数: 24

約数和(自身を含む): 44368128

約数和(自身を除く): 23354308

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 5501, 11002, 22004, 27505, 55010, 110020, 1050691, 2101382, 4202764, 5253455, 10506910, 21013820]

約数ペア:

[(1, 21013820), (2, 10506910), (4, 5253455), (5, 4202764), (10, 2101382), (20, 1050691), (191, 110020), (382, 55010), (764, 27505), (955, 22004), (1910, 11002), (3820, 5501)]