21118424

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{138937}}^1$

素因数の和:138962

約数の個数: 16

約数和(自身を含む): 41681400

約数和(自身を除く): 20562976

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 138937, 277874, 555748, 1111496, 2639803, 5279606, 10559212, 21118424]

約数ペア:

[(1, 21118424), (2, 10559212), (4, 5279606), (8, 2639803), (19, 1111496), (38, 555748), (76, 277874), (152, 138937)]