21870970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198827}}^1$

素因数の和:198845

約数の個数: 16

約数和(自身を含む): 42946848

約数和(自身を除く): 21075878

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198827, 397654, 994135, 1988270, 2187097, 4374194, 10935485, 21870970]

約数ペア:

[(1, 21870970), (2, 10935485), (5, 4374194), (10, 2187097), (11, 1988270), (22, 994135), (55, 397654), (110, 198827)]