19517240

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4831}}^1$

素因数の和:4943

約数の個数: 32

約数和(自身を含む): 44357760

約数和(自身を除く): 24840520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4831, 9662, 19324, 24155, 38648, 48310, 96620, 193240, 487931, 975862, 1951724, 2439655, 3903448, 4879310, 9758620, 19517240]

約数ペア:

[(1, 19517240), (2, 9758620), (4, 4879310), (5, 3903448), (8, 2439655), (10, 1951724), (20, 975862), (40, 487931), (101, 193240), (202, 96620), (404, 48310), (505, 38648), (808, 24155), (1010, 19324), (2020, 9662), (4040, 4831)]