18044980

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{6491}}^1$

素因数の和:6639

約数の個数: 24

約数和(自身を含む): 38172960

約数和(自身を除く): 20127980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 6491, 12982, 25964, 32455, 64910, 129820, 902249, 1804498, 3608996, 4511245, 9022490, 18044980]

約数ペア:

[(1, 18044980), (2, 9022490), (4, 4511245), (5, 3608996), (10, 1804498), (20, 902249), (139, 129820), (278, 64910), (556, 32455), (695, 25964), (1390, 12982), (2780, 6491)]