20053808

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:345

約数の個数: 40

約数和(自身を含む): 39997440

約数和(自身を除く): 19943632

約数列:

[1, 2, 4, 8, 16, 71, 127, 139, 142, 254, 278, 284, 508, 556, 568, 1016, 1112, 1136, 2032, 2224, 9017, 9869, 17653, 18034, 19738, 35306, 36068, 39476, 70612, 72136, 78952, 141224, 144272, 157904, 282448, 1253363, 2506726, 5013452, 10026904, 20053808]

約数ペア:

[(1, 20053808), (2, 10026904), (4, 5013452), (8, 2506726), (16, 1253363), (71, 282448), (127, 157904), (139, 144272), (142, 141224), (254, 78952), (278, 72136), (284, 70612), (508, 39476), (556, 36068), (568, 35306), (1016, 19738), (1112, 18034), (1136, 17653), (2032, 9869), (2224, 9017)]