216977980

素因数分解:

$2^2\times 5^1\times {\mathrm{487}}^1\times {\mathrm{22277}}^1$

素因数の和:22773

約数の個数: 24

約数和(自身を含む): 456609888

約数和(自身を除く): 239631908

約数列:

[1, 2, 4, 5, 10, 20, 487, 974, 1948, 2435, 4870, 9740, 22277, 44554, 89108, 111385, 222770, 445540, 10848899, 21697798, 43395596, 54244495, 108488990, 216977980]

約数ペア:

[(1, 216977980), (2, 108488990), (4, 54244495), (5, 43395596), (10, 21697798), (20, 10848899), (487, 445540), (974, 222770), (1948, 111385), (2435, 89108), (4870, 44554), (9740, 22277)]